수학동아 - 폴리매스

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함께 풀고 싶은 문제

나도 수학쌤 문장제 문제를 변형해 문제를 내는 곳입니다.

[문장제 문제&개념응용] [기하][문장제 문제&개념응용] 도형 문제

jane 2022.03.24 09:20 조회 180

문제 푼 사람 0명

페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

1) 정십이각형에서 3점을 골라 만들어지는 삼각형은 220개이다. 정십이각형의 변과 겹치지 않는 삼각형의 개수를 구하시오.

2) 해 모양에 있는 예각삼각형들이 모두 합동이다. 각 B1 - 각 A1 = 15일 때 n의 값은?(각 A1B2A2 = 각 A2B3A3 = ...)

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jane Lv.8 2022.03.24 09:37 비밀댓글

비밀 댓글이 등록 되었습니다.

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- jane Lv.8 2022.03.24 09:37
  
  2개 다 맞춰야 해결입니다.
  
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