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圆锥曲线
Author:
杨晓晨
Topic:
Conic Sections
GeoGebra
New Resources
常见四边形是否是双心四边形
第三周作业效果演示
盈利與虧蝕
斐波那契螺旋弧线（表格法）
活动三：应用性质
Discover Resources
Apollonius Problem 10 CCC wiki step 2
Generalized Pythagorean Theorem
Circumcentre
No.2
线性规划
Discover Topics
Vectors
Pythagoras or Pythagorean Theorem
Division
Pyramid
Linear Functions