國中數學二下3-1

國中數學二下3-1

8th Grade

10 Qs

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國中數學二下3-1

國中數學二下3-1

Assessment

Quiz

Education

8th Grade

Practice Problem

Easy

Created by

康軒 國中

Used 2+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

△ABC中,若∠A=(3x-10)°,∠B=(2x+20)°,∠C=(x-10)°,則此三角形為何種三角形?_x000B_

鈍角三角形
直角三角形
等腰三角形
正三角形

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

△ABC中,若3∠A=∠B,6∠A=∠C,則∠C=?_x000B_

36°
72°
108°
144°

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

一個四邊形最多有幾個鈍角?_x000B_

1
2
3
4

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列哪一組度數是等腰直角三角形三個外角的度數?_x000B_

120°、120°、120°
60°、60°、60°
90°、135°、135°
100°、100°、60°

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

已知一三角形的兩外角分別為60°和150°,則此三角形應為下列哪一種三角形?_x000B_

等腰三角形
銳角三角形
直角三角形
正三角形

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

在△ABC中,已知∠A=(x+5)°,∠B=(2x-11)°,∠C的外角為114°,則∠A=?_x000B_

45°
66°
70°
85°

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

有關正十邊形的敘述,下列何者錯誤?_x000B_

內角和為360°
過一頂點可畫出7條對角線
以一頂點畫對角線,可形成8個三角形
每一個外角度數為36°

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