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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

Practice Test

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Exercise 24 Page 535

Review the conditions which allow you to prove that a quadrilateral is a parallelogram.

Yes, see solution.

To prove that a quadrilateral is a parallelogram, it is enough to show that one of the following conditions is satisfied.

Both pairs of opposite sides are parallel.
Both pairs of opposite sides are congruent.
Both pairs of opposite angles are congruent.
The diagonals bisect each other.
A pair of opposite sides is both parallel and congruent.

Let's analyze the given quadrilateral.

Looking at the congruence markings, we can see that both pairs of opposite angles are congruent. Therefore, the quadrilateral is a parallelogram.