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五点を結ぶシュタイナー点
Author:
Bunryu Kamimura
5点ABCDEを結んだ直線の和が最短になる点を求めよ。証明:FK=BK+CK, JF+AJ=GJ, GI+IE=HI
GeoGebra
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対数螺旋
正17角形 作図 regular 17-gon 2
アステロイド
直線の軌跡
standingwave
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Example 5 of GeoGebra Quick Start PDF
2次曲面2
Moodle quiz circle1
無理関数のグラフ
天球_緯度季節
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Kite
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