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Sine Formula 正弦公式
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
畫出對稱圖形
兩位數加法
柱體建築師
異分母分數減法
兩位數除以一位數（一）
Discover Resources
Locus of mid-point of a variable chord of a circle.
優良作品1
分數的認識
gjh-e01-02 未知數邊長的長方形
圖解畢氏定理
Discover Topics
Dilation
Congruence
Arithmetic
Pyramid
Linear Equations