Question

Explain why every square is a quadrilateral. Choose the correct answer below.

A.Every square is a quadrilateral because it is a polygon in which opposite angles have the same measure.
B.Every square is a quadrilateral because it is a polygon with exactly one pair of parallel sides.
C.Every square is a quadrilateral because it is a​ four-sided polygon.

Answer 1

C.

To be a quadrilateral the shape just needs to have 4 edges (sides) and 4 vertices (angles). Answer A would be incorrect because the angles opposite to each other so not have to have the same measure. Answer B would be incorrect because you do not have to have parallel sides to be considered a Quadrilateral.