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将军饮马——三角形周长最小
Author:
陈宜红
Topic:
Symmetry
,
Triangles
GeoGebra
New Resources
兩位數除以一位數（二）
【案例】圆柱体内放置一个大球六个小球
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
四邉形 (四年級) 教師版
Discover Resources
Combined Quiz on Bearings 方位：合併測驗
指數與對數函數
Properties of parallelogram(平行四邊形的性質)
狗绕五边形转
斐波那契螺旋弧线（表格法-可动态调节）
Discover Topics
Set Theory
Arithmetic Operations
Limits
Dilation
Pythagoras or Pythagorean Theorem