Quadrilateral ABCD has the following vertices: A(2, 7) B(8,1) C(1, -9) D(-6, -2) Is quadrilateral ABCD a parallelogram, and why?

Yann Ziselman asked Sep 6, 2022

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7 votes

Quadrilateral ABCD has the following

vertices:
A(2, 7)
B(8,1)
C(1, -9)
D(-6, -2)
Is quadrilateral ABCD a parallelogram, and
why?

Yann Ziselman asked Sep 6, 2022

3.0k points

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18 votes

Answer:

No because the angle of point C is NOT congruent to the angle of point A.

Explanation:

A quadrilateral MUST be a parallelogram if it has both pairs of its opposite angles congruent.

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