圓O上兩點A、B把圓分成優、劣兩弧，若優弧的度數比劣弧的度數的4倍少10°，則圓心角∠AOB＝？_x000B_
國中數學三上2-2
7th Grade
•10 Qs
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國中數學三上2-2
Quiz
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Education
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7th Grade
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Hard
康軒 國中
Used 7+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
74°
72°
70°
68°
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖
2π
5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖
65°
70°
72°
80°
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若一圓弧所對的圓周角是15°，則此圓弧所對的圓心角是幾度？_x000B_
15°
30°
60°
90°
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖
△ABC為直角三角形
△ABC三內角比為3：4：5
△ABC為銳角三角形
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖
∠C＞∠D，且∠C、∠D都是銳角
∠C＝∠D，且∠C、∠D都是銳角
∠C＜∠D，且∠C、∠D都是鈍角
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如圖
60
50
40
30
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