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congruent (SA) 2
Author:
Ricky Chan
GeoGebra
New Resources
近似值：有效數字
Nested spiral octagon
國旗 (作圖步驟直接餵給 Claude)
兩組對邊相等的四邊形
國旗 (Claude 版)
Discover Resources
ex_1
平移法（一）
椭圆的两条垂直切线的交点轨迹
相位角、頻率
三角形的內心
Discover Topics
Geometric Distribution
Linear Regression
Vectors
Fractal Geometry
Incircle or Inscribed Circle