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内凹的四边形
Author:
李洋
GeoGebra
New Resources
GeoGebra笔记功能体验课件
三位數除以一位數（二）
兩組對邊相等的四邊形
兩位數除以一位數（一）
找出對稱軸
Discover Resources
眼球定理
Measuring areas by placing different shapes
Drag C and see
正三角形堆垛
折三角形
Discover Topics
Terms
Circumcircle or Circumscribed Circle
Dilation
Rotation
Matrices