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