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地球20160328
Author:
loty(俊溢)
GeoGebra
New Resources
平行線的斜率
龙形曲线-分形龙2
垂直線的斜率
正方形雪花图案
祖冲之的期望：内棋与外棋
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習題二
P3 平行與垂直
Tangent of circle
劉徽的「割圓術」 的複本
两个等腰三角形
Discover Topics
Linear Programming or Linear Optimization
Circumcircle or Circumscribed Circle
Parabola
Quadratic Equations
Normal Distribution