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根據百分率找數量（一）: 例3
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
畫出對稱圖形
Earth with coastline
四邉形 (四年級) 教師版
湖南省张毅郴数字教研工作室 logo
拼砌四邊形
Discover Resources
商高定理之正三角形1
利用对称求线段和最值（移动端）
全等形_Collection
Pappus Chain
空间立方体
Discover Topics
Sine
Surface
Limits
Fractions
Dilation