423尺規作圖

423尺規作圖

8th Grade

12 Qs

quiz-placeholder

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423尺規作圖

423尺規作圖

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Medium

Created by

洪榮忠 新湖國中

Used 34+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

關於此作圖過程,下列何者錯誤

這是中垂線的作圖

分別以E、F為圓心,任意長為半徑畫弧,可得到G、H兩點

GH直線 為 EF線段的中垂線

EF直線 為 GH線段的中垂線

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

已知∠BAC,欲作其角平分線,須以A為圓心,適當長為半徑畫弧,交角的兩邊於D、E,再以D、E為圓心畫弧,則半徑應為下列何者?

大於¼D̅E̅長

小於¼D̅E̅長

大於½D̅E̅長

小於½D̅E̅長

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

如圖,下列敘述何者錯誤

L1是AB線段的中垂線

L2是AC線段的中垂線

AE線段:EB線段 = 2:3

AE線段:AB線段 = 3:8

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

如右圖,直線CD為AB線段的垂直平分線,且交於D點,

則下列哪一個敘述錯誤

D為圓心,AD線段為半徑畫圓,則圓必過B

C為圓心,BC線段為半徑畫圓,則圓必過A

B為圓心,AC線段為半徑畫圓,則圓必過C

A為圓心,AB線段為半徑畫圓,則圓必過C

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

利用角平分線作圖將∠ABC分成兩部分,使其比為1:7,則至少需作幾次?

2

3

4

5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

將一線段分成兩部分,使其比為3:5,則至少需「中垂線作圖」幾次?

7

5

3

2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

將一線段切成八等分,至少需使用「中垂線作圖」幾次?

7

5

3

2

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