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正方變十字
Author:
李春培
正方變十字
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
拼砌四邊形
GeoGebra笔记功能体验课件
異分母分數減法
兩位數除以一位數（二）
Discover Resources
螺旋線
Similar triangles reasons
基本作圖2
梯形堆垛
圓柱截面曲線
Discover Topics
Surface
Combinatorics
Prism
Sequences and Series
Optimization Problems