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ysahn22
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이서연바보
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ysahn22
제곱해서 2인수
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피타고라스정리2
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ysahn22
피타고라스정리2
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ysahn22
피타고라스의 정리 1
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각이등분선
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각이등분선
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외심
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삼각비
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삼각비
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직각삼각형 변들의 관계
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ysahn22
예각과 둔각에서의 피타고라스정리
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ysahn22
