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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
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找出對稱軸
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
球體建築師
錐體建築師
Discover Resources
優良作品1(力誌)
圓內弦中點軌跡
Apollonius Problem 7 CCP Inversion 12
函数图像研究
空間座標系
Discover Topics
Fractal Geometry
Ellipse
Dilation
Reflection
Indefinite Integral