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光折射
Author:
kevin20020905
GeoGebra
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四邊形的特性
【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
【案例】2013年安徽高考15题
兩位數加法
Discover Resources
B3_1-5_互動例6
九九乘法表
graph of functions
認識角度
三个平面两两相交
Discover Topics
Centroid or Barycenter
Binomial Distribution
Geometry
Translation
Standard Deviation