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畢氏定理
Author:
趙國亨
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
判斷球體
異分母分數減法
四邊形的特性
三位數除以一位數（二）
Discover Resources
dabuhe
圓與切線
Properties of a Rectangle
some circles
正方形雪花图案
Discover Topics
Quadratic Functions
Parametric Curves
Step Functions
Multiplication
Variance