Classify quadrilaterals
Quadrilaterals are four-sided shapes with a family tree. Knowing their properties helps you sort and name them.
Do this: Read the concept below, then try the quiz or activity.
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.