Final answer:
A quadrilateral is a polygon with four sides. Quadrilaterals that have at least one pair of parallel sides include trapezoid, isosceles trapezoid, parallelogram, rhombus, and rectangle. Quadrilaterals that have at least two congruent sides include isosceles trapezoid, parallelogram, rhombus, rectangle, and square.
Step-by-step explanation:
A quadrilateral is a polygon with four sides. Let's answer each question separately:
- Quadrilaterals that have at least one pair of parallel sides:
- Quadrilaterals that have at least two congruent sides: