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Pythagorean Triples 畢氏數組
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
兩位數加法
第八周作业
異分母分數減法
兩位數除以一位數（二）
拼砌四邊形
Discover Resources
平行四邊形
regular tetrahedron (CH4)
三角形
平行線(方格版)
z=g(x,y)函数图像
Discover Topics
Planes
Power Functions
Matrices
Circle
Trigonometry