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轨迹2016.4.16
Author:
DongHai Zhang
三角形内心
GeoGebra
New Resources
探究三角形的全等條件
兩位數加法
三位數除以一位數（二）
斜率的值
【案例】圆柱体内放置一个大球六个小球
Discover Resources
八年级奥数之双曲线
桁架圖解步驟
earth
線性變換對相關係數的影響
GeoGebra创建的小游戏集
Discover Topics
Incircle or Inscribed Circle
Conic Sections
Pythagoras or Pythagorean Theorem
Reflection
Tree Diagrams