چندبر

Also known as polytopes

{| class="wikitable" style="margin-left:1em" align="right" |- |50px |50px |50px |50px |50px |50px |- | colspan="6" | A polyhedron is a 3-dimensional polytope |} thumb|400px|right|A polygon is a 2-dimensional polytope. Polygons can be characterised according to various criteria. Some examples are: open (excluding its boundary), bounding circuit only (ignoring its interior), closed (including both its boundary and its interior), and self-intersecting with varying densities of different regions.