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三角形三边关系
Author:
王彤
GeoGebra
New Resources
錐體建築師
兩組對邊相等的四邊形
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
直角坐標平面上的旋轉變換
Discover Resources
Polygon Activity
拋物線上的弓形區域
Copy of 固定周界的長方形的面積變化
perimeter of rectangle
组合体的表面积1
Discover Topics
Trapezoid
Sequences and Series
Curve Sketching
Exponential Functions
Function Graph