| A | B |
|---|
| One pair of oppsosite sides parallel; diagonals are not congruent | trapezoid |
| One pair of opposite sides are parallel; base angles are congruent | isosceles trapezoid |
| diagonals only bisect each other | parallelogram |
| opposite angles are congruent and diagonals for four congruent triangles | rhombus |
| consecutive angles are supplementary; diagonals only bisect each other and are congruent | rectangle |
| four interior angles are congruent and diagonals form four congruent isosceles triangles | square |
| A trapezoid with one interior angle that is 90 degrees | right trapezoid |
| consecutive sides are congruent | kite |
