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圆的面积展开 的副本
Author:
杨欣霞
GeoGebra
New Resources
常见四边形是否是双心四边形
斐波那契螺旋弧线（表格法）
双心四边形
第八周作业2
龙形曲线-分形龙
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拋物線的兩切線
ghseh 二次函數描點法頂點法-6
摺正三角形
S3 WS4.3 Q02(3D圖)
正方体、正四面体的外接球
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Percentages
Translation
Function Graph
Rectangle
Linear Functions