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初中八年级奥数：面积与面积法
Author:
王俊辉
拖动A、B、C、D，改变四边形形状
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（一）
直角坐標平面上的旋轉變換
兩位數加法
GeoGebra笔记功能体验课件
Discover Resources
橢圓
Parallelogram 02
拋物線軌跡(1)
定周长的正多边形面积变化规律
P4構作對稱圖形
Discover Topics
Poisson Distribution
Solids or 3D Shapes
Exponential Functions
Frequency Distribution
Function Graph