3-2外心
9th Grade
•7 Qs
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3-2外心
Quiz
•
Mathematics
•
9th Grade
•
Practice Problem
•
Medium
翁琬婷 翁琬婷
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7 questions
Show all answers
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 • 2 pts
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
3.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
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
4.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
如圖有一直角三角形ABC，其外接圓半徑為下列何者？
【提示】直角三角心外心在斜邊的中點
10
5
8
6
5.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
如圖有一直角三角形ABC，其外接圓半徑為下列何者？
48
14
7
25
6.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
△𝐴𝐵𝐶，O為外心，∠B＝20度，求∠AOC為幾度？
40
10
20
80
7.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
△𝐴𝐵𝐶，O為外心，∠AOC＝60度，求∠B為幾度？
60
120
15
30
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