
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

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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
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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