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双镜面反射问题
Author:
孟宝兴
Topic:
Symmetry
GeoGebra
New Resources
球體建築師
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
三位數除以一位數（一）
Discover Resources
ggb-fs-b1 分數擴分
橢圓的定義
B4 4-1 平行線性質
圖解畢氏定理
雙曲線1--焦點法
Discover Topics
Similar Triangles
Set Theory
Statistical Characteristics
Parametric Curves
Geometric Transformations