- tridecagonal
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Having thirteen sides and angles, similar to a tridecagon.Syn: triskaidecagonal
Wikipedia foundation.
Wikipedia foundation.
Polygonal number — In mathematics, a polygonal number is a number that can be arranged as a regular polygon. Ancient mathematicians discovered that numbers could be arranged in certain ways when they were represented by pebbles or seeds; such numbers, which can be… … Wikipedia
Tetradecahedron — A tetradecahedron is a polyhedron with 14 faces. There are numerous topologically distinct forms of a tetradecahedron, with many constructible entirely with regular polygon faces.A tetradecahedron is sometimes called a tetrakaidecahedron.… … Wikipedia