Quadrilaterals: Special Characteristics
By K Mathis
| Parallelogram | |||
 | opposite sides parallel (def) | ||
 | opposite side congruent | ||
 | opposite angles are congruent | ||
 | diagonals bisect each other | ||
| Rectangle | |||
 | has congruent (right) angles(definition) | ||
 | opposite sides parallel | ||
 | opposite sides congruent | ||
 | opposite angles congruent (right) | ||
 | diagonals are congruent AC = BD | ||
 | diagonals bisect each other | ||
| Rhombus | |||
 | has 4 congruent sides (def) | ||
 | opposite sides are parallel | ||
| opposite sides are congruent (all are) | |||
 | opposite angles are congruent | ||
 | diagonals bisect each other | ||
 | diagonals bisect opposite angles | ||
 | diagonals are perpendicular | ||
| Square | |||
 | has 4 congruent sides and 4 congruent (right) angles (def) | ||
 | opposite sides parallel | ||
| opposite angles congruent (all right) | |||
 | diagonals are congruent AC=BD | ||
 | diagonals bisect each other | ||
 | diagonals bisect opposite angles all bisected angles equal 45º diagonals are perpendicular | ||
| Trapezoid | |||
 | one pair of parallel sides (def) | ||
| Isosceles Trapezoid | |||
 | legs are congruent (def) | ||
 | each pair of base angles congruent | ||
 | diagonals are congruent AC=BD | ||
| Kite | |||
 | consecutive pairs of sides | ||
| congruent (def) | |||
 | diagonals perpendicular | ||
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