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根據百分率找數量（一）:例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩位數除以一位數（二）
第八周作业
四邉形 (四年級) 教師版
拼砌四邊形
兩組對邊相等的四邊形
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兩圓外公切線
題四
Volumen ablesen 2
SLOPE
錯角---水平平行綫
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Kite
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Division
Cone
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