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Quadrilaterals: Special Characteristics
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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