Home/Fifth Grade Math/Week 32: Quadrilaterals/Lesson 5
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Describe Relationships Among Quadrilaterals

Quadrilaterals are connected in a hierarchy: some shapes are special cases of others.

Lesson 5

Concept

Key relationships: - All squares are rectangles. - All squares are rhombuses. - All rectangles and rhombuses are parallelograms. - Not all parallelograms are rectangles. - Not all rectangles are squares. Use properties: - parallel sides - equal sides - right angles This structure helps classify by properties, not just by appearance.

Try it

Decide true or false: 1. Every square is a rectangle. 2. Every rectangle is a square. 3. Every rhombus is a parallelogram. 4. A shape with 4 right angles is always a rectangle. 5. Give one example of a parallelogram that is not a rectangle.