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五上-CP4-第三节平行四边形面积1
Author:
冉献伟
GeoGebra
New Resources
三位數除以一位數（一）
判斷球體
四邊形的特性
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
Discover Resources
凹透镜
Ex5D#6
外心
光圈与正多边形外角和
学用数学 S0
Discover Topics
Piecewise Functions
Angles
Statistical Characteristics
Exponential Functions
Tangent Line or Tangent