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x*x=x^2
Author:
qqqgary
GeoGebra
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找出對稱軸
画直线等分三角形的面积
柱體建築師
兩位數除以一位數（二）
兩組對邊相等的四邊形
Discover Resources
量角器
Distributive Law of Multiplication 2 (乘法的分配率 2)
密鋪2
翰林數學_2下_CH3-2_SSA
直线与平面垂直的折纸实验
Discover Topics
Translation
Root
Sphere
Quadrilaterals
Curve Sketching