An octagon is a polygon that has 8 sides
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'.
First of all it is 'polygon' NOT 'polgon'. A five sided shape is named a 'pentagon'. Here is a list for up to 10 sides. 3- trigon (triangle) 4- quadragon ( quadrilateral 5- pentagon 6- hexagon 7 - heptagon 8- octagon 9- nonagon 10 - decagon 100 sides - a centagon. '--gon' is the name for a 2-dimensional shape '--hedron' is the name for a 3-dimensional object.
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.,
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.
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''
Icosogon
Heptagon
It is a triangle
360/18 ie 20 sides
A polygon is a closed 2-D shape with sides made from straight line segments.