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431三角形的內角與外角

Authored by 洪榮忠 新湖國中

Mathematics

8th Grade

Used 34+ times

431三角形的內角與外角
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在△ABC中,∠A+∠B+∠C=?

90度

1800度

180 度

360度

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

有一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°

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

n邊形的內角和可用下列哪個公式表示?

(n-3)× 180度

n× 180度

(n-2)× 180度

(n-4)× 180度

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

在△ABC 中,∠A:∠B:∠C=1:2:3,則∠C=?

30°

45°

60°

90°

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

下列四組角度中,何者可為三角形的三外角的度數?

45°、45°、90°

90°、90°、180°

110°、120°、130°

105°、120°、125°

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若一個正 n 邊形的一個外角是 18°,求 n=?

10

15

20

25

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖,一輛車由 A 地出發,經 B、C 兩地行駛至 D 地停止,則此輛車共轉了幾度?

50°

130°

230°

270°

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