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Author:
RintarouTW
GeoGebra
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龙形曲线-分形龙2
盈利與虧蝕
常见四边形是否是双心四边形
椭圆内切圆链
斐波那契螺旋弧线(表格法-可动态调节)
Discover Resources
三角函數with sine, cosine圖形
equilateral triangle construction
Lagrange
如何判斷曲線夠不夠圓
Copia lui Easter egg
Discover Topics
Coordinates
Cosine
Rotation
Reflection
Surface