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固定周界長方形的面積變化（二）
Author:
Anthony OR 柯志明
,
GeoGebra Institute of Hong Kong
Topic:
Area
GeoGebra
New Resources
美國國旗 (Codex 版)
兩組對邊相等的四邊形
第八周作业
近似值：有效數字
Nested spiral octagon
Discover Resources
題2
课前热身
算幾不等式
部分佔全部的百分率: 例1的副本
Estimating the Mean
Discover Topics
Standard Deviation
Integral Calculus
Prism
Linear Regression
Quadratic Equations