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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
兩組對邊相等和有直角的四邊形
國旗 (Claude 版)
Earth with coastline
近似值：有效數字
Fibonacci Clock
Discover Resources
題A至E
柯西不等式 (3)
畫三角形 第3題
椭圆的生成
七下数学案例教程2-对顶角和邻补角例题
Discover Topics
Dilation
Standard Deviation
Interest Calculation
Arithmetic Operations
Exponent