
內角與外角
Authored by 劉宏哲 劉宏哲
Mathematics
8th Grade

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78 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一個角度是鈍角?
20 º
180 º
90 º
150 º
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
這是什麼角?
銳角
直角
鈍角
平角
周角
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
下列關於角的性質的敘述,何者正確?
∠A和∠B互補,則∠A+∠B=90度
若∠A等於∠B,則∠A和∠B為對頂角
若∠A和∠B為對頂角,則∠A等於∠B
兩直線相交只會形成一組對頂角
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若∠A的餘角是60°,且∠A與∠B互補,則∠B是幾度?
30°
60°
120°
150°
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
若∠A的餘角是40°,且∠A是∠B的2倍,則∠B的補角是幾度?
25°
50°
125°
155°
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
在△ABC中,∠A+∠B+∠C=?
90度
1800度
180 度
360度
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
已知一個多邊形以某一頂點為固定點作對角線,結果最多可作出 5 條對角線,則此多邊形的內角和為何?
900°
1080°
1260°
1440°
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