
八下 3-1 多邊形的內角與外角(重新佈題)
Authored by 老師 誠誠
Mathematics
8th Grade

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35 questions
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1.
OPEN ENDED QUESTION
1 min • 1 pt
直角的 2 倍= 度。
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2.
OPEN ENDED QUESTION
1 min • 1 pt
平角的 13 倍= 度。
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3.
OPEN ENDED QUESTION
1 min • 1 pt
周角的一半= 度。
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4.
OPEN ENDED QUESTION
1 min • 1 pt
若∠A=34°,∠A 和∠B 互餘,且∠B 和∠C 也互餘,則∠B 和∠C 分別為多少度?
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5.
OPEN ENDED QUESTION
1 min • 1 pt
若一個角的餘角的 2 倍和它補角的 12 互為補角,則這個角的度數為何?
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6.
OPEN ENDED QUESTION
1 min • 1 pt
若∠A 和∠B 互補,∠A 和∠C 互餘,且∠B+∠C=140°,則∠A 為多少度?
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7.
OPEN ENDED QUESTION
1 min • 1 pt
如右圖,直線 L 與直線 M 相交形成四個角,∠1=(3x)°,∠2=(2x+5)°,∠3=(2y+25)°,∠4=(2y-5)°,分別求出 x、y 的值與∠1、∠2、∠3、∠4 的度數。
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