In the diagram, sr = and qr = . what is the perimeter of parallelogram pqrs?

In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. The congruence of opposite sides and opposite angles is a direct consequence of the Euclidean parallel postulate and neither condition can be proven without appealing to the Euclidean parallel postulate or one of its equivalent formulations.
since the adjecent sides are also equal so the four sides are equal, so the measure of the perimeter is 4 times its side

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