Classify quadrilaterals
Quadrilaterals are four-sided shapes with a family tree. Knowing their properties helps you sort and name them.
Concept
All quadrilaterals have 4 sides, but they are not all the same. š¦ **Rectangle** - 4 right angles - opposite sides equal and parallel šØ **Square** - 4 equal sides - 4 right angles - is a special rectangle and a special rhombus šŖ **Rhombus** - 4 equal sides - opposite angles equal š„ **Parallelogram** - opposite sides parallel and equal š¶ **Trapezoid** - at least one pair of parallel sides š· **Kite** - two pairs of adjacent equal sides š Key idea: One shape can belong to multiple groups.
Try it
Classify each shape by all names that apply. 1. 4 equal sides and 4 right angles 2. Opposite sides parallel, no right angles required 3. Exactly one pair of parallel sides 4. 4 right angles, opposite sides equal Draw: 5. Draw a trapezoid. 6. Draw a rhombus that is not a square. 7. Draw a rectangle that is not a square. Challenge: 8. Explain why every square is a rectangle, but not every rectangle is a square.