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Overview of lines, curves, vertices, and sides of 2D shapes
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Basics of Geometry
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Identifying Straight Lines in Various Shapes
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Determining whether there are straight lines in various shapes
MAT.GEO.101 (Basic Shapes - Elementary Math Grade 2)
MAT.GEO.101 (Basic Shapes - Elementary Math Grade 3)
MAT.GEO.101 (2D Shapes - Geometry)
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