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What is a diagonal on a polygon?
a segment that connects two nonconsecutive (“not next to”) vertices
what is a parallelogram?
a quadrilateral with both pairs of opposite sides parallel
Properties of Parallelograms/Sides: if a quadrilateral is a parallelogram, then…
both pairs of its opposite sides are congruent
Properties of Parallelograms/Angles: if a quadrilateral is a parallelogram, then…
both pairs of opposites angles are congruent
it’s consecutive angles are supplementary.
it has four right angles
Diagonals of Parallelograms: if a quadrilateral is a parallelogram, then…
then its diagonals bisect each other