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蝴蝶定理动态演示
Author:
weizhuli(卫珠礼)
GeoGebra
New Resources
四邊形的特性
拼砌四邊形
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
判斷球體
Discover Resources
基本檔
圖解多項式的乘積
拋物線4--平行四邊形法
多邊形的切割與拼砌的副本
S3 WS4.3 Q05(3D圖)
Discover Topics
Arithmetic
Inequalities
Matrices
Surface
Cone