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大邊對大角
Author:
tan90t
bbbbb
GeoGebra
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找出對稱軸
錐體建築師
異分母分數減法
判斷球體
兩位數加法
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數位學習社
三角形的三中線交於一點(重心)
圓錐截痕模型
拋物線5--包絡線法
三角函数y=sin(wx+b)的图象变换.许兴华数学
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Natural Numbers
Sphere
Parabola
Differential Calculus
Right Triangles