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play tennis
Author:
李春培
play tennis
GeoGebra
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畫出對稱圖形
錐體建築師
異分母分數減法
柱體建築師
直角坐標平面上的旋轉變換
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glt-c02-09 五角柱旋轉
雙橢
抛物线内接直角三角形斜边中点的轨迹
学用数学
拖拉小正方体
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Mode
Linear Functions
Planes
Statistical Characteristics
Isosceles Triangles