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降梯
Author:
郭萌
GeoGebra
New Resources
撒针估算面积实验
常见四边形是否是双心四边形
活动三:应用性质
百分數及其應用
斐波那契螺旋弧线(表格法-可动态调节)
Discover Resources
以量角器量度角
練習
這好難用
黃金三角形
旋轉正方形
Discover Topics
Similar Triangles
Sphere
Angles
Rotation
Optimization Problems