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幾何明珠2-6
Author:
bigbirdjack
GeoGebra
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折扣
第八周作业2
斐波那契螺旋弧线（表格法）
常见四边形是否是双心四边形
龙形曲线-分形龙
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賭神
錐體建築師 1
Apollonius Problem 10 CCC wiki
同頂角_2
橢圓2-四圓心近似法
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Parabola
Function Graph
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