
외심 퀴즈
Quiz
•
Mathematics
•
8th Grade
•
Easy
박진일 박진일
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
△ABC에서 AB와 BC의 수직이등분선의 교점을 O라 하고, 점 O에서 AC에 내린 수선의 발을 D라고 하자. CD=3cm일 때, AD의 길이를 구하면?
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
점 O가 △ABC의 외심일 때, ∠x의 크기
를 구하면?
10도
15도
20도
25도
3.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
점 O가 △ABC의 외심일 때, ∠x의 크기
를 구하시오.
110
130
135
140
4.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
점 O가 △ABC의 외심일 때, 다음 보기 중에서 옳지 않은 것은?
AD=AF
AD=BD
OA=OC
∠OAD=∠OBD
5.
MULTIPLE CHOICE QUESTION
3 mins • 20 pts
점 O는 △ABC의 외심이고 ∠ABO : ∠BCO=3 : 2, ∠BCO : ∠CAO= 2 : 5일 때, ∠AOC의 크기를 구하면?
60도
80도
90도
100도
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