polygon: it refers to a figure that has closed sides and straight edges with more than 3 sides
More than 3 sides, closed figures, and, straight sides.
polygon of more than 4 sides and a triangle.
three sided figures consist of only triangles, while a four sided figure consists of any quadrilateral, so you can draw more figures with 4 sideds than with 3
A polygon may have many more than four sides, a triangle has only three vertices.
There is no special name to distinguish shapes with more than 14 sides from those with 14 or fewer.
We get all shape names (Polygons) from the greek language.
A shape with more than 10 sides may be called a polygon - but only if all the sides are straight lines - and there is nothing in the question to suggest that they are.
They are two dimensional figures, have 3 or more sides, no curved lines, no intersecting lines, and are closed figures. (It's more than two but it still works)
Octagon, dodecagon, myriagon.
The name of the four-sided shape that has only one pair of parallel sides is known as a trapezoid. The other two sides are not parallel to each other. There are many other shapes with more than four sides that have one pair of parallel sides but these typically don't have special names. So assuming the question is only referring to four-sided figures, the answer is a trapezoid.
Two triangles.