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根據百分率找數量（一）:例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
画直线等分三角形的面积
兩位數加法
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數除以一位數（二）
Discover Resources
七巧板
圓錐與扇形之關係
三线八角
三角函數伸縮與平移
射线上滚动椭圆
Discover Topics
Hypergeometric Distribution
Indefinite Integral
Arithmetic Operations
Trigonometry
Incircle or Inscribed Circle