Quadrilaterals
A quadrilateral is a polygon with four sides or edges and four vertices or corners. Quadrilaterals include trapezoids, rhombuses, rectangles, and squares. Quadrilaterals may be classified according to number of pairs of parallel sides:
- Two Pairs of Parallel Sides (Parallelograms)
- One Pair of Parallel Sides (Trapezoid)
- No Parallel Sides
Related Topics:
- Parallelograms
- Trapezoid
- Rectangle
- Square
- Rhombus