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根據百分率找數量（二）: 例1
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
球體建築師
美國國旗 (Claude 版)
Nested spiral octagon
兩組對邊相等的四邊形
長方體平面投影 (Codex版)
Discover Resources
三菱鏡分光 紅光與藍光的角度關係
Volume_Section
斜率與y截距
-3 ≤ cosA+cosB+cosC ≤ 3/2
三阶魔方（magic cube）
Discover Topics
Incircle or Inscribed Circle
Addition
Natural Numbers
Kite
Interest Calculation