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矩形折叠（翻折问题）
Author:
浅蓝色
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩組對邊相等的四邊形
Fibonacci Clock
AI 訓練教室
sanjiaohanshu
Discover Resources
task5
Ext angle cyclic quad
勒洛三角形頂點C軌跡
我的第一个GGB绘本
折扣 例2的副本
Discover Topics
Unit Circle
Random Variables
Similarity Transformation or Similarity
Differential Equation
Complex Numbers