Unscramble Words POLYGONSOnline version An irregular polygon A regular pentagon A regular hexagon A regular heptagon A regular octagon A regular nonagon Irregular polygons at least 4 sides and four angles. Usually different sides lengths and differing angles. May occur with the same side lengths but then angles will not be the same by DEBORAH DEVEAUX 1 Name types of polygon Irregular octagon . Regular hexagon . heptagon Regular . polygon Regular . nonagon Regular . . . . . .