polygon ,
polygonal shape

However, other polygonal shapes can be used to solve the packing problem as well.

The uneven rim of this crater has a polygonal shape, rather than forming a simple circle.

The outer rim has a somewhat polygonal shape, although it is generally circular.

At the opposite side, the sanctuary has also a polygonal shape with five outer walls.

The polygonal shape approached that of a circle, which reduced the amount of building material.

The surviving outer wall is generally circular but with a somewhat polygonal shape.

The rim has a discernibly polygonal shape, although overall it remains circular.

Usually, polygonal shapes are found poleward of 55 degrees latitude.

Surface areas of flat polygonal shapes must agree with their geometrically defined area.

It was built in a polygonal shape and lead to other earlier cities of Delhi.