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甜甜圈v5
Author:
lin yiju
GeoGebra
New Resources
球體建築師
兩組對邊相等的四邊形
第八周作业
三位數除以一位數（二）
三位數除以一位數（一）
Discover Resources
集合運算
PreEnigma-1
五邊形與三角形等積
內積
球體體積圖解
Discover Topics
Similar Triangles
Difference and Slope
Division
Dilation
Cone