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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
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兩組對邊相等和有直角的四邊形
拼砌四邊形
異分母分數減法
球體建築師
【案例】2013年安徽高考15题
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可調包絡圓
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古典概型
橢圓(上下型)標準式
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Linear Regression
Functions
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