จากภาพ ข้อใดถูกต้อง

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span>}}<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span>\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ช</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ฉ</span></span></span></span>}}$\overline{AE\ }\perp\โอเวอร์ไลน์{GF} $$\overline{เออี}\perp \overline{จี\; เอฟ}$$ ,$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ฉ</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span>}}<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span>\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}}$\overline{FC}\perp\โอเวอร์ไลน์{CB} $$\overline{เอฟซี}\perp \overline{ซีบี}$$

• $\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}}<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span></span>\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ช</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ง</span></span></span></span></span>}}$\overline{AE\ }\perp\โอเวอร์ไลน์{GD} $$\overline{เออี}\perp \overline{จีดี}$$ ,$\stackrel{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ฉ</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span></span>}}<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span></span>\stackrel{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ช</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}}$\overline{FC}\perp\โอเวอร์ไลน์{GE} $$\overline{เอฟซี}\perp \overline{จีอี}$$

• $$\overline{AE\ }\perp\โอเวอร์ไลน์{GD} $$\overline{เออี}\perp \overline{จีดี}$$ ,$$\overline{FC}\perp\โอเวอร์ไลน์{CB} $$\overline{เอฟซี}\perp \overline{ซีบี}$$

• $\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}}<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span></span>\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span></span>}}$\overline{AE}\perp\โอเวอร์ไลน์{CB} $$\overline{เออี}\perp \overline{ซีบี}$$ ,$\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}}<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">\perp </span></span></span></span></span>\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span></span>}}$\overline{AE}\perp\โอเวอร์ไลน์{CB} $$\overline{เออี}\perp \overline{ซีบี}$$

ส่วนเส้นตรงคู่ใดคู่หนึ่ง

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• 
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• 

รูปแปดเหลี่ยมมีด้านทุกด้านยาวเท่ากันเพื่อให้มีเส้นขนานกี่คู่

• 6 คู่

• 5 คู่

• 4 คู่

• 3 คู่

เมื่อใดก็ตามที่เหมาะสมที่สุดในการวัดระยะห่างของเส้นบรรทัด

• ไม้บรรทัด

• ไม้เมตร

• ไม้ฉาก

• เชือก

ค่ะ$\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span></span>}}$\โอเวอร์ไลน์{AB} $$\overline{เอบี}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">เอ็กซ์</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">วาย</span></span></span></span>}}$\โอเวอร์ไลน์{XY} $$\overline{เอ็กซ์วาย}$$$\stackrel{<span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="2"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}}$\โอเวอร์ไลน์{AB} $$\overline{เอบี}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="3"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="3"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">พี</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="3"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ถาม</span></span></span></span>}}$\โอเวอร์ไลน์{PQ} $$\overline{พีคิว}$$ และ$\stackrel{<span\; class="katex-container"\; data-idx="4"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="4"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">เอ็กซ์</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="4"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">วาย</span></span></span></span>}}$\โอเวอร์ไลน์{XY} $$\overline{เอ็กซ์วาย}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="5"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="5"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ส</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="5"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ต</span></span></span></span>}}$\โอเวอร์ไลน์{ST} $$\overline{เอส\; ที}$$

• $\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">เอ็กซ์</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">วาย</span></span></span></span></span>}}$\โอเวอร์ไลน์{XY} $$\overline{เอ็กซ์วาย}$$ เทียบกับ$\stackrel{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">พี</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ส</span></span></span></span></span>}}$\โอเวอร์ไลน์{PS} $$\overline{พีเอส}$$

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}}$\โอเวอร์ไลน์{AB} $$\overline{เอบี}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">วาย</span></span></span></span>}}$\โอเวอร์ไลน์{BY} $$\overline{บีวาย}$$

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ส</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ต</span></span></span></span>}}$\โอเวอร์ไลน์{ST} $$\overline{เอส\; ที}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">พี</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ถาม</span></span></span></span>}}$\โอเวอร์ไลน์{PQ} $$\overline{พีคิว}$$

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">พี</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ถาม</span></span></span></span>}}$\โอเวอร์ไลน์{PQ} $$\overline{พีคิว}$$ เทียบกับ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ถาม</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ต</span></span></span></span>}}$\โอเวอร์ไลน์{QT} $$\overline{คิวที}$$

อธิบาย AB // CD // EF ถ้ามุม y = 122° แล้วมุม 3 เท่ากับกี่องศา

• 58 ชม

• 68 ชม

• 78 ชม

• 98 ชม

รวบรวม AB // CD // EF ถ้ามุม 1 = 58° แล้วมุม 10 จะเท่ากับกี่องศา

• 142 ชม

• 112 ชม

• 122 ชม

• 132 ชม

ส่วนเส้นตรงคู่สงบที่ต่อเนื่องกันไม่ได้เลย

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ง</span></span></span></span>}}$\โอเวอร์ไลน์{AD}\ $$\overline{เอ.ดี}$$ ขั้นต่ำ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span>}}$\โอเวอร์ไลน์{BC} $$\overline{บีซี}$$ เนื่องจากผลรวมของมุมภายในที่อยากให้เหมือนกันของเส้นตัดเท่ากับ 180 รับชม

• $$\โอเวอร์ไลน์{AD}\ $$\overline{เอ.ดี}$$ ขั้นต่ำ$\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ง</span></span></span></span></span>}}$\โอเวอร์ไลน์{ED} $$\overline{อีดี}$$ เนื่องจากผลรวมของมุมภายในที่อยากให้เหมือนกันของเส้นตัดเท่ากับ 180 รับชม

• $\stackrel{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ข</span></span></span></span>}}$\โอเวอร์ไลน์{AB} $$\overline{เอบี}$$ ขั้นต่ำ$\stackrel{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span>}{\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ค</span></span></span></span>}\mathrm{<span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ง</span></span></span></span>}}$\โอเวอร์ไลน์{ซีดี} $$\overline{ซีดี}$$ เพราะมุมที่จะต้องเท่ากัน

• $\stackrel{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">อี</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="0"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ง</span></span></span></span></span>}}$\โอเวอร์ไลน์{ED} $$\overline{อีดี}$$ ขั้นต่ำ$\stackrel{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">‾</span></span></span></span></span>}{\mathrm{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ก</span></span></span></span></span>}\mathrm{<span><span\; class="katex-container"\; data-idx="1"\; contenteditable="false"><span\; class="katex-display"><span\; class="katex"><span\; class="katex-mathml">ฉ</span></span></span></span></span>}}$\โอเวอร์ไลน์{AF} $$\overline{เอเอฟ}$$ เพราะมุมที่จะต้องเท่ากัน

รวบรวม AB // CD // EF ถ้ามุม 6 = 130° แล้วมุม 8 จะเท่ากับกี่องศา

• 50 ชม

• 30 ชม

• 25 ชม

• 15 ชม

รวบรวม AB // CD // EF ถ้า y = 65° แล้วมุม 5 + มุม 9 จะเท่ากับกี่องศา

• 230 ชม

• 100 ชม

• 120 ชม

• 130 ชม