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圆的有关概念
Author:
孟宝兴
GeoGebra
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【案例】2013年安徽高考15题
兩位數加法
兩位數除以一位數（一）
找出對稱軸
畫出對稱圖形
Discover Resources
畢氏定理證明
生活中的平面圖形─四邊形的性質
时钟
圆面积展开图--教学材料
点、线、角
Discover Topics
Upper and Lower Sum or Riemann Sum
Curve Sketching
Random Variables
Linear Programming or Linear Optimization
Special Points