triacontagon

Definitions

A polygon with thirty sides.

Equivalents

Examples

“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.”

“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.”

“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?”

CEFR level