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Heron formula
Author:
ralphchen
GeoGebra
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圓的基本性質
第八周作业1
第三周作业效果演示
龙形曲线-分形龙
科赫雪花
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亂數取值 by java
GeoGeBra畫橢圓形的動態軌跡
阴影部分例子
雙曲線2-焦點法
一元一次方程式的副本
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Orthocenter
Vectors 2D (Two-Dimensional)
Reflection
Isosceles Triangles
Arithmetic