Answer:
Option D is correct i.e none of the above
Step-by-step explanation:
According to the definition of parallelogram following are the properties of parallelogram
1. Opposite sides are congruent
2.Opposite angels are congruent
3.Consecutive angles are supplementary
4.If one angle is right, then all angles are right.
5.The diagonals of a parallelogram bisect each other.
6.Each diagonal of a parallelogram separates it into two congruent triangles.
So option D is correct as rest all are properties of parallelogram.
Keywords: Geometry
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