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'.
An octagon is a polygon that has 8 sides
Hexagon
360/18 ie 20 sides
It wil be a regular 18 sided polgon
A polygon with ten sides would be called a decagon.
It can be, if its sides all have the same length.In that case, it would also be called a 'square'.
An octagon is a polygon that has 8 sides
Heptagon
Hexagon
A pentagon
there is such a thing as an irregular polygon that has sides of different sizes. all REGULAR polygons however have equal sides
360/18 ie 20 sides
A polygon is a closed 2-D shape with sides made from straight line segments.
Mo such shape/thing as a 'polgon'. If you mean ' polygon'. The word 'polygon' means a 2-dimensional shape (--gon) of many sides (poly--). So the word 'polygon' mean an many sided shape. For a specific number of sides it becomes;- trigon ( triangle) 3 sides quadragon ( quadrilateral ) 4 sides pentagon 5 sides et seq.,
60 sides 180-174 = 6 360/6 = 60
It wil be a regular 18 sided polgon