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Author:
yen
GeoGebra
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盈利與虧蝕
斐波那契螺旋弧线(表格法)
椭圆内切圆链
中华人民共和国国旗
科赫雪花
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增長的圓
Apollonius Problem 7 CCP Inversion simple 34
圖解兩向量所張開之平行四邊形面積
椭圆抛物面
中华人民共和国国旗
Discover Topics
Reflection
Tangent Function
Kite
Real Numbers
Rectangle