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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
【案例】圆柱体内放置一个大球六个小球
第八周作业
兩組對邊相等和有直角的四邊形
三位數除以一位數（一）
畫出對稱圖形
Discover Resources
三角形外心
圓柱截橫
GGB3
小车
S3 Ex4.3 Q01(3D圖)
Choikou 5階
Discover Topics
Statistics
Pythagoras or Pythagorean Theorem
Hypothesis Testing
Geometric Mean
Trigonometric Functions