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SWC Introduce incentre
Author:
hksiusir
GeoGebra
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折扣
常见四边形是否是双心四边形
比較五件物件的重量
龙形曲线-分形龙2
斐波那契螺旋弧线（表格法）
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waaachen
幾何問題_圓01
數位學習社
平分圓周1
二次函数的图像
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Congruence
Vectors 2D (Two-Dimensional)
Geometric Transformations
Pyramid
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