Dictionary

triacontagon en · NOUN

Pronunciation

• (US) audio

Etymology

From triaconta- + -gon.

Meanings

1. A polygon with thirty sides.
   • 1964 July, B. L. Chilton, On the Projection of the Regular Polytope {5, 3, 3} into a Regular Triacontagon, Canadian Mathematical Bulletin, Volume 7, Number 3, page 386, In the projection the 600 points can be classified in 12 sets: each set consists of either of 30 or of 60 vertices which lie on a circle concentric with the outer triacontagon.
   • After projection onto the (x₁, x₂) plane, the A’s, B’s, C’s, and D’s form four concentric triacontagons, inscribed in circles of radii a, b, c, and d. 1947, H. S. M. Coxeter, Regular Polytopes, published 2012, unnumbered page:
   • 1997, Johannes Kepler, E. J. Aiton, Alistair Matheson Duncan, Judith Veronica Field (translators), The Harmony of the World, [1619, Harmonices Mundi], American Philosophical Society, Volume 309, page 59, What should the decision now be about the sides of the Triacontagon?

Forms

Relateds

triacontagonal

Synonyms

30-gon

Translations (22)

ja 三十角形 (geometry) · nl dertighoek (geometry) · frr Dörtighuk (geometry) · be трыццацікутнік (geometry) · fi 30-kulmio (kolmekymmenkulmio) (geometry) · fy tritichhoek (geometry) · ko 삼십각형 (geometry) · it triacontagono (geometry) · mk триесетаголник (geometry) · frs daartiğkâant (geometry) · stq Trietichkaant (geometry) · bg тридесетоъгълник (geometry) · pt triacontágono (geometry) · pl trzydziestokąt (geometry) · cmn 三十邊形 /三十边形 (geometry) · cs třicetiúhelník (geometry) · stq Trüütichkaant (geometry) · hu harmincszög (geometry) · uk тридцятикутник (geometry) · ru тридцатиуго́льник (geometry) · es triacontágono (geometry) · de Dreißigeck (geometry)