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[창의 퍼즐] 7등 탈환 성공이닷
집돌이 페렐만 2019.12.18 05:02 조회 1000
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

 

 

 

 

 

 

사각형 ABCD는 마주보는 변이 평행하고 모든 변의 길이가 같으며 모든 각은 직각이다. 점 A에서 선분 BC의 중점에 내린 선분 AF와 점 C에서 선분 AB의 중점에 내린 선분 CE의 교점을 G라고 하자. 사각형 AGCD의 넓이는?(삼각형 GFC의 넓이는 3제곱센티미터이다.)

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    해결
    sicma Lv.11 2019.12.18 10:22 비밀댓글

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    다시 도전
    21세기오일러 Lv.11 2019.12.26 05:47 비밀댓글
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