A regular pentagon has no parallel or perpendicular sides, but a non-regular pentagon might have parallel and perpendicular sides. It all depends on the polygon.

How many parallel lines does a pentagon have?

A pentagon has five sides and also has no sets of parallel lines.

What polygons have parallel lines?

Some shapes that have parallel sides include the parallelogram, the rectangle, the square, the trapezoid, the hexagon, and the octagon.