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香港的硬幣
Author:
kwwong
GeoGebra
New Resources
拼砌四邊形
球體建築師
直角坐標平面上的旋轉變換
錐體建築師
画直线等分三角形的面积
Discover Resources
圆与它的外切圆
沈暐珊 橢圓反射
顶顶顶顶顶顶顶顶顶顶
解題三
两角和的正弦公式几何证明（改进）
Discover Topics
Rotation
Parallelogram
Addition
Rational Numbers
Median Value