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周界和面積
Author:
kennylau
GeoGebra
New Resources
比較五件物件的重量
双心四边形
圓的基本性質
龙形曲线-分形龙2
正方形雪花图案
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坐標幾何
總結
廣義三角函數的換算
凸透镜成像
S0G4L2 到两点距离的运算为定值
Discover Topics
Arithmetic Operations
Polygons
Circle
Arithmetic
General Quadrilateral