
九年級-外心
Authored by 吳志強 吳志強
Mathematics
6th - 8th Grade
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
請問外心為三角形的三邊___交點?
角平分線
中垂線
中線
切線
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有一△ABC,O為外心,則其外接圓半徑為下列何者?
AB線段
OB線段
AC線段
BC線段
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
請問下列三角形的外心所處位置的配對,何者正確?
銳角三角形:內部
直角三角形:外部
鈍角三角形:斜邊中點
銳角三角形:斜邊中點
直角三角形:外部
鈍角三角形:內部
銳角三角形:內部
直角三角形:斜邊中點
鈍角三角形:外部
銳角三角形:外部
直角三角形:斜邊中點
鈍角三角形:內部
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
任一個三角形可已作出幾個外接圓?
1個
2個
無限多個
除非特殊三角形,否則無法作出
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若一個三角形之外接圓直徑為6,則此三角形之外心到三頂點的距離總和為多少?
3
6
9
12
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
下列有關三角形外心的敘述,何者正確?
外心到三角形的三邊等距離
外心就是外接圓的圓心,所以外心到各頂點的距離相等
外心與各頂點的連線必平分各內角
外心與三頂點的連線將三角形分為三個等面積的三角形
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
三角形兩邊中垂線之交點稱為_____心
重心
內心
外心
垂心
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