triangle

icosagon or 20-gon, is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

cube a solid object with six square sides of equal size...

hexadecagon hexakaidecagon, or 16-gon is a sixteen-sided polygon. A regular hexadecagon is a hexadecagon in which all angles are...

Weaire-Phelan model the Weaire–Phelan structure is a complex 3-dimensional structure representing an idealised foam of equal-sized bubbles…

dodecagon or 12-gon is any twelve-sided polygon. A regular dodecagon is a figure with sides of the same length...

circle a round plane figure whose boundary – the circumference – consists of points equidistant from a fixed point...

astroid A particular mathematical curve: a hypocycloid with four cusps. Specifically, it is the locus of a point on...

irregular shape a polygon that does not have all sides equal and all angles equal...