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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等的四邊形
算柱 (兩位數)
球體建築師
錐體建築師
Discover Resources
cute panda
point uion coloring
不盡相異物的排列
Trianglar prism
羊角螺线[Euler spiral】
Discover Topics
Hypergeometric Distribution
Parallelogram
Conditional Probability
Variance
Continuity