The name of a regular polygon with five equal sides and five equal angles is a pentagon. Each of the internal angles is equal to 108 degrees.
Icosogon
360/18 ie 20 sides
it is usually called a heptagon or septagon. but we usually call it a heptagon. :)
It can be, if its sides all have the same length.In that case, it would also be called a 'square'.
'What_is_the_longest_side_of_a_right_angle_triangle_called
how many sides does an polygonshave
A polygon with ten sides would be called a decagon.
That might be a figure as simple as a triangle, as long as it is no special triangle (that is, a triangle with sides of three different lengths).
The name of a regular polygon with five equal sides and five equal angles is a pentagon. Each of the internal angles is equal to 108 degrees.
Heptagon
It is a triangle
Icosogon
there is such a thing as an irregular polygon that has sides of different sizes. all REGULAR polygons however have equal sides
Providing that it is a regular 28 sided polgon then each interior angle will measure: 1670 8' 34.29''
360/18 ie 20 sides
A polygon is a closed 2-D shape with sides made from straight line segments.