Drawing straight lines must be a step that is included!
just to do time pass & iritate students.
hendecagon
It they weren't equal is wouldn't make a tessellation.
Look around you. How many 11-sided polygons do you see?
There are lots of different types of polygons Polygons are classified into various types based on the number of sides and measures of the angles.: Regular Polygons Irregular Polygons Concave Polygons Convex Polygons Trigons Quadrilateral Polygons Pentagon Polygons Hexagon Polygons Equilateral Polygons Equiangular Polygons
There are 20.5 + 6 + 9 = 20 (Neither circles nor unclosed linear shapes are polygons.)
It is quite acceptable to call them an 11-agon to a 100-agon but what is more important is knowing how to work out their properties.
All polygons and polyhedra.All polygons and polyhedra.All polygons and polyhedra.All polygons and polyhedra.
11 nCr 5 = 462
That is because an octagon is singular and polygons is plural. An octagon is a polygon, and octagons are polygons but a octagon cannot be a polygons.
regular polygons are the ones that all sides are equal