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crimeas [40]
3 years ago
13

which of the following are necessary when proving that the opposite sides of a parallelogram are congruent? A. Alternate interio

r angles are supplementary. B. Opposite sides are parallel. C.Opposite sides are perpendicular. D.Alternate interior angles are congruent
Mathematics
2 answers:
Free_Kalibri [48]3 years ago
5 0
B. and D. are the right answers.
Mashcka [7]3 years ago
4 0

First we have to understand what parallogram is .

A parallelogram is that quadrilateral, whose opposite sides are parallel and equal .

And alternate interior angles are congruent , not supplementary in parallelogram.

And neither the opposite sides are perpendicular .

So the correct option is B .

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