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根據百分率找數量（一）: 例3的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
第八周作业
柱體建築師
找出對稱軸
画直线等分三角形的面积
三位數除以一位數（一）
Discover Resources
Quiz on Interest 利息：測驗
正n邊形與圓上點的中點軌跡(解析)
相似形的應用
三角函數sine跟cosine
畢式定理 (13)的副本
Discover Topics
Sine
Vectors 2D (Two-Dimensional)
Median Line
Root
Arithmetic