Defining vs Non-defining Attributes
Identifying polygons by certain characteristics, like number of sides, angles, vertices etc. Identifying parallel, perpendicular and intersecting lines in a given image. Identifying angles as right angle, less than a right angle & greater than a right angle
Mapped to CCSS Section# 3.G.A.1
Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.