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谢尔宾斯基地毯
Author:
雷风恒
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
球體建築師
柱體建築師
兩位數除以一位數（一）
Discover Resources
Parallelogram 02
乘法
Drag C and see
伍四红 圆与正方形 面积同周长比较
一次函数的引入
Discover Topics
Polynomial Functions
Cuboid
Congruence
Isosceles Triangles
Continuity