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外凸的正方形
Author:
宋晓燕
GeoGebra
New Resources
近似值：有效數字
判斷球體
找出對稱軸
第八周作业
小数 的副本
Discover Resources
四角柱算體積
甜甜圈v5
阿基米德的異想世界
七巧板（tangram）的副本
F4_Ch9.1
Discover Topics
Dilation
Geometric Distribution
Pythagoras or Pythagorean Theorem
Differential Equation
Geometric Transformations