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根據百分率找數量（二）: 例2的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩組對邊相等的四邊形
算柱 (兩位數)
第八周作业
長方體平面投影 (Codex版)
Earth with coastline
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畢氏定理動態證明(歐基里得，應用時間參數跳躍函數)
蝴蝶線ggb
angles sum of a triangle 1
外積分配律
鸚鵡螺旋線
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Special Points
Boxplot
Root
Parallelogram
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