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GeoGebra
GeoGebra Classroom
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橢圓軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
椭圆内切圆链
球体的截面
第八周作业1
龙形曲线-分形龙
斐波那契螺旋弧线(表格法)
Discover Resources
三角形外心
Reference Angle 參考角
fastest curve
Copy of 分數與小數
圓錐曲線