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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
長方體平面投影 (Codex版)
sanjiaohanshu
近似值：有效數字
判斷球體
兩組對邊相等和有直角的四邊形
Discover Resources
滑桿動畫2-4:畢氏定理
(004)80201辛宇婕
波的叠加
剪切成正三棱柱（制作：李三军，修订：孟宝兴）
贪吃蛇小游戏
Discover Topics
Solids or 3D Shapes
Linear Equations
Parabola
Diagrams
Centroid or Barycenter