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根據百分率找數量（二）: 例4的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（二）
算柱 (兩位數)
球體建築師
找出對稱軸
Discover Resources
方格紙上畫長方形3
正方體的反射對稱
面積相關問題(Area)
Cardioid: r=1-cosθ
三角形重心、垂心、內心、外心、尤拉線、九點圓圖解
直方圖_Demo的副本
Discover Topics
Tangent Line or Tangent
Conditional Probability
Cylinder
Ellipse
Multiplication