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reflectional symmetry_1
Author:
maths324324
GeoGebra
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Earth with coastline
近似值：有效數字
畫出對稱圖形
找出對稱軸
直角坐標平面上的旋轉變換
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畢氏定理
tetrahedron_refection
线性规划
七下数学案例教程2-对顶角和邻补角例题
畫三角形 題1b 的複本
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Diagrams
Distributions
Trigonometry
Volume
Cylinder