| A | B |
|---|
| parallelogram | quadrilateral with both pairs of opposite sides parallel |
| rhombus | a parellelogram with four congruent sides |
| rectangle | a parellelogram with four right angles |
| square | a parallelogram with four congruent sides and four right angles |
| kite | a quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent |
| trapezoid | a quad with exactly one pair of parallel sides |
| isosceles trapezoid | trapezoid whose nonparallel opposite sides are congruent |
| consecutive angles | angles of a polygon that share a side |
