A shape with more than four sides is specifically called a?

A shape with more than four sides is called a polygon. The term "polygon" encompasses any flat, two-dimensional shape that is made up of straight line segments connected to form a closed chain. A polygon can have three sides (a triangle) or more, with the number of sides determining the specific type of polygon. For instance, a pentagon has five sides, a hexagon has six, and so forth.

The other terms provided refer to more specific categories: a quadrilateral consists of exactly four sides; a trapezoid is a specific type of quadrilateral that has at least one pair of parallel sides; and a circle is not considered a polygon at all, as it does not have straight sides or angles. Thus, the broad definition and applicability of the term "polygon" make it the correct answer for a shape with more than four sides.