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畢氏定理證明（Ｉ）
Author:
林辰燁
GeoGebra
New Resources
異分母分數減法
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
近似值：有效數字
判斷球體
Discover Resources
simson line
複合形體的表面積(凹形)
f(x)=ax^2
标题
原點對稱1
Discover Topics
Equations
Congruence
Pie Chart or Circle Chart
Vectors 3D (Three-Dimensional)
Normal Distribution