tetracontadigon

tetracontadigon (plural tetracontadigons)

1. (geometry) A polygon with forty two sides and forty two angles.
   • 2010, Sergei Abramovich, Topics in Mathematics for Elementary Teachers, page 90:

     Construct an edge-to-edge tessellation with a triangle, a heptagon, and a tetracontadigon. Is it possible to continue such a tessellation to have the full petal around the tetracontadigon?

   • 2021, Sergei Abramovich, ‎Michael L. Connell, Developing Deep Knowledge in Middle School Mathematics:

     […] (edge-to-edge tessellation with triangle, heptagon, and tetracontadigon, see Fig. 25). Fig. 25 Edge-to-edge tessellation with triangle, heptagon, and tetracontagon

   • 2024, Sergei Abramovich, Developing Deep Knowledge in Middle School Mathematics, page 82:

     Using GeoGebra, construct an edge-to-edge tessellation with triangle, heptagon, and tetracontadigon. Is it possible to continue such a tessellation to have the full petal around the tetracontadigon?

• 42-gon
• tetracontakaidigon