A regular polygon is a polygon with all equal ... But it's not actually necessary to draw all of those triangles. Each polygon will always divide into two triangles fewer than the number of ...

Each triangle has 180 ... where n is the number of sides In a regular polygon all the angles are equal. Each interior angle is calculated by dividing the sum of the interior angles by the ...

The ancient Greek mathematician Euclid proved in his Elements of Geometry that there are only five Platonic solids – the regular tetrahedron (four sides that are equilateral triangles), the cube (six ...