a shape with one million sides
millagon
momogon digon bigon trigon tragon tetragon quadrigon pentagon quintagon hexagon sexagon heptagon septagon octagon octigon nonagon enneagon decagon hendecagon duodecagon tredecagon quattuordecagon quindecagon sexdecagon septendecagon octodecagon novemdecagon vigintagon trigintagon centagon millagon micrigon nanigon picigon femtigon attigon zeptigon yoctigon xonigon vecigon icosigon triacontigon googoligon googolplexigon
No such thing as a 'hepagon'. I think you mean 'HEPTAGON'. Note the spelling. A heptagon is a seven(7) sided 2-dimensional figure. From their Latin roots, the names of polygons are : - 3 ' Trigon (Triangle). 4 ' Tetragon ( Quadrilateral) 5 ' Pentagon 6 ' Hexagon 7' Heptagon ( as given) 8 ' Octagon 9 ' Nonagon 10 ' Decagon 100 ' Centagon 1000 ' Millagon. '--gon' is also Latin , for '2 dimensional figure. So learn some Latin. Science and Maths use a lot of words from these ancient languages.