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餘弦定理修正項及風車證明

Author:薛鈞聰

New Resources

兩組對邊相等的四邊形
四邉形 (四年級) 教師版
四邊形的特性
画直线等分三角形的面积
球體建築師

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直線方程軌跡
Klein Bottle
裝飾用
禪繞畫2
第四次:20190308

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Geometric Transformations
Similar Triangles
Isosceles Triangles
Dilation
Frequency Distribution

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