Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Related Lessons
5th Grade
Are You a Square?!
Lesson 5
Use attributes of quadrilaterals (number of sides and type of angles) to sort and classify shapes. Use attributes of quadrilaterals to sort and classify shapes.
