423尺規作圖
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
洪榮忠 新湖國中
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12 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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
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
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?
以D為圓心,AD線段為半徑畫圓,則圓必過B點
以C為圓心,BC線段為半徑畫圓,則圓必過A點
以B為圓心,AC線段為半徑畫圓,則圓必過C點
以A為圓心,AB線段為半徑畫圓,則圓必過C點
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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