geometry, a triacontagon or 30-gon is a thirty-sided polygon. The sum of any triacontagon's interior angles is 5040 degrees. The regular triacontagon is a constructible...

Icosikaiheptagon - 27 sides Icosikaioctagon - 28 sides Icosikaienneagon - 29 sides Triacontagon - 30 sides Tetracontagon - 40 sides Pentacontagon - 50 sides Hexacontagon...

which is the petrie polygon of the 24-cell. The number of sides of a triacontagon, which in turn is the petrie polygon of the 120-cell and 600-cell. The...

not known if the regular form can be constructed with neusis or not. triacontagon 30 tetracontagon (or tessaracontagon) 40 pentacontagon (or pentecontagon)...

icosioctagon icosaoctagon 29 icosikaienneagon icosienneagon icosaenneagon 30 triacontagon 31 triacontakaihenagon triacontahenagon tricontahenagon 32 triacontakaidigon...

enneagon, decagon, hendecagon, dodecagon, ... enneadecagon, icosagon, triacontagon, ... chiliagon, myriagon trilogy, tetralogy, pentalogy, hexalogy, heptalogy...

3,3] B4, [4,3,3] F4, [3,4,3] H4, [5,3,3] Pentagon Octagon Dodecagon Triacontagon 5-cell {3,3,3} tesseract {4,3,3} 16-cell {3,3,4} 24-cell {3,4,3} 120-cell...

Pentadecagon Hexadecagon Heptadecagon Octadecagon Enneadecagon Icosagon Triacontagon Tetracontagon Pentacontagon Hexacontagon Heptacontagon Octacontagon Enneacontagon...

zig-zag Petrie polygons instead. The 120-cell's Petrie polygon is a triacontagon {30} zig-zag skew polygon. Since the 120-cell has a circumference of...

is the square of the number of vertices. A triacontagon or 30-gon is a thirty-sided polygon. The triacontagon is the largest regular polygon whose interior...