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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
New Resources
【案例】2013年安徽高考15题
三位數除以一位數（一）
兩位數加法
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
Discover Resources
龍騰4_1-1習6-2
應用圓周率: 題3
旋转体
放射狀旋轉圖形(2)
venn图着色
Discover Topics
Secant Line or Secant
Pythagoras or Pythagorean Theorem
Planes
Perimeter
Functions