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劉虹圻 垂心
Author:
呂麗珠
Topic:
Orthocenter
GeoGebra
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兩組對邊相等和有直角的四邊形
判斷球體
拼砌四邊形
近似值：有效數字
第八周作业
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水波干涉
Indices 4
拋物線2-焦點法
S3 Ch4.3 例4.6b 三視圖(3D圖)
函數的面積 (黎曼和) 的複本
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Equations
Angles
Dilation
Histogram
Parabola