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二次曲面
Author:
敏敏
二次曲面
GeoGebra
New Resources
四邊形的特性
球体的体积推导（优化版）
兩位數加法
画直线等分三角形的面积
三位數除以一位數（二）
Discover Resources
Apollonius Problem 10 CCC wiki step 4
包絡菱形
旋轉長方形
Chords of a Circle
Quiz on Addition and Subtraction of Directed Numbers (2)
Discover Topics
Diagrams
Expected Value
Random Variables
Right Triangles
Frequency Distribution