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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
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【案例】2018年全国1卷理科12题
拼砌四邊形
兩組對邊相等和有直角的四邊形
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阿波羅尼斯問題：與三圓相切的圓
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