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动态三角形
Author:
GeoGebra Institute of WuXi
if指令的应用
GeoGebra
New Resources
判斷球體
三位數除以一位數（二）
異分母分數減法
畫出對稱圖形
兩組對邊相等的四邊形
Discover Resources
利用圓來畫橢圓
一元二次不等式(2)
圓周
爱心
探索到两定点的距离之积为定值的点的轨迹
Discover Topics
Upper and Lower Sum or Riemann Sum
Rotation
Logarithm
Differential Equation
Cosine