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If all pairs of consecutive angles of a quadrilateral are supplementary, then the quadrilateral is a parallelogram.

If all pairs of consecutive angles of a quadrilateral are supplementary, then the quadrilateral is a parallelogram.
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If all pairs of consecutive angles of a quadrilateral are supplementary, then the quadrilateral is a parallelogram.

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User Bojangles
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7.7k points

2 Answers

2 votes

Answer:

true

Explanation:

answered
User Rrebase
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8.2k points
1 vote
This is true.

It comes from the same side interior angles theorem which says that same side interior angles are supplementary, only if the lines are parallel.
answered
User Viktor Nordling
by
8.1k points
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