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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
원파
2020.06.04 10:17
조회 734
기하 = 기하 하이 (??)
------------------------
좌표평면이 있다. 여기서 원점을 O라고 하며, A(0,sqrt(3)), B(1,0)이다.
삼각형 ABC가 정삼각형이 되는 B를 지나면서 y축과 평행한 직선 위의 점 C를 잡자.
또, 점 A에서 변 BC에 내린 수선의 발을 D라 한다. 삼각형 ADC의 외심에서 y축에 내린 수선의 발을 X라 하였을 때, 다음을 구하여라.
(작도한 것이나 풀이는 첨부하셔야 합니다.)
1. 각 OBA 및 각 OAB의 크기
2. AB의 길이 및 기울기
3. 삼각형 ADC의 외심의 좌표
지금 바로
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