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Function: driver

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Function: require_once

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Function: _error_handler

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: require_once

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Function: _error_handler

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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Function: require_once

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Function: _error_handler

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getFloatingMyInfo

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
Line: 559
Function: get_footer

File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once

수학동아 - 폴리매스
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[창의 퍼즐] 기하 문제가 다시
sicma 2020.03.27 10:33 조회 389
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

한 변의 길이가 5인 정사각형 ABCD가 있다. 점B를 중심으로 점A와 점C를 지나도록 그려서 선분 BD와의 교점을 점E라 하자. 점E에서 선분DC에 내린 수선위 발을 점H라 하자.  (1)선분EH의 길이를 구하시오. (2)삼각형 EHD의 넓이를 구하시오. (3)EHC의 넓이를 2가지 방법으로 구하시오. (EC는 원의 호이다.)

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