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Unit 6 - Reasoning with Shapes
2.GSR.7.2 (Lines of symmetry in everyday objects)
3.GSR.6.3 (Lines of symmetry in polygons)
4.GSR.8.1 (Attributes of 2D figures)
4.GSR.8.2 (Polygons)
4.GSR.8.3 (Composite rectangles)