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七巧板奔人
Author:
李春培
七巧板奔人
GeoGebra
New Resources
兩位數加法
兩位數除以一位數（一）
算柱 (兩位數)
四邊形的特性
兩組對邊相等的四邊形
Discover Resources
立體圓錐與斜切面關係
Graph of Sine Function 正弦函數圖像
khkhk
I love Taiwan.(可縮放和移動)
两角差的正弦公式证明1
Discover Topics
Terms
Similar Triangles
Arithmetic Mean
Random Variables
Equilateral Triangles