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等角对等边（等边对等角）
Author:
夜雨嘀嗒
Topic:
Triangles
GeoGebra
New Resources
正方形雪花图案
异形操场
科赫雪花
中华人民共和国国旗
双心四边形
Discover Resources
七巧板
二維點陣列變化
Copy of 分數與小數
面積
周界-平移法(練習三)
Discover Topics
Rotation
Surface
Trigonometry
Geometric Distribution
Vectors 2D (Two-Dimensional)