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內角與外角

Authored by 劉宏哲 劉宏哲

Mathematics

8th Grade

內角與外角
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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

Media Image

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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