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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
近似值：有效數字
拼砌四邊形
Nested spiral octagon
兩組對邊相等和有直角的四邊形
球體建築師
Discover Resources
七巧板（tangram）
解方程式
椭圆的定义
ghseh 二次函數的開口方向
S3 WS4.3 Q02(3D圖)
Discover Topics
Numbers
Tangent Function
Inequalities
Stochastic Process or Random Process
Diagrams