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反射定律 Law of Reflection
Author:
W.L. Wong, Albert
GeoGebra
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算柱 (兩位數)
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
畫出對稱圖形
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立體幾何
Form 2 (中二）
兩位數乘三位數直式
立体几何
有趣的线
Discover Topics
Cuboid
Function Graph
Pyramid
Probability
Vectors 3D (Three-Dimensional)