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椭圆第一定义
Author:
wangyiyao
Topic:
Conic Sections
,
Ellipse
GeoGebra
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第八周作业
漂亮的摇摆曲线
画直线等分三角形的面积
三位數除以一位數（二）
異分母分數減法
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離心率與圓錐曲線
Apollonius Problem 6 CLP Inversion 0
test
平均線
等距曲线ggb作图法
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Geometry
Straight Lines
Solids or 3D Shapes
Symmetry
Median Line