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3D_2
Author:
Ong Kin Lun
GeoGebra
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百分數及其應用
祖冲之的期望：内棋与外棋
折扣
圓的切線方程
龙形曲线-分形龙2
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繪畫三角形的外接圓
用 Geogebra 模擬日照、影長變換
圓的軌跡
图形动画3
橢圓軌跡 (4)的副本
Discover Topics
Angles
Root
Quadratic Equations
Circumcircle or Circumscribed Circle
Parabola