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乘法公式2
Author:
李春培
乘法公式2
GeoGebra
New Resources
兩位數除以一位數（二）
三位數除以一位數（二）
算柱 (兩位數)
錐體建築師
兩組對邊相等的四邊形
Discover Resources
Apollonius Problem 4 LLP Homo 12
圓上的角任務一: 提示卡(一)
Locus (Two points 2)
工具：PlaneArrows, PlaneText... (v.2)
线段-视觉差
Discover Topics
Correlation
Algebra
Cylinder
Equilateral Triangles
Straight Lines