If each interior angle measures 120 degrees then it is an hexagon which has 6 sides
A pentagon
An octagon has interior angles of 1080 degrees.
The general formula for the sum in degrees of the interior angles of a regular polygon with n sides is 180(n - 2). The name "dodecagon" means a polygon of 12 sides. Therefore, the sum of the angles is 1800 degrees.
It has 9 sides and is called a nonagon
A triangle
A pentagon
An octagon has interior angles of 1080 degrees.
It is an 8 sided octagon whose interior angles add up to 1080 degrees.
A pentagon is a 5 sided polygon whose interior angles add up to 540 degrees
The general formula for the sum in degrees of the interior angles of a regular polygon with n sides is 180(n - 2). The name "dodecagon" means a polygon of 12 sides. Therefore, the sum of the angles is 1800 degrees.
It has 9 sides and is called a nonagon
It is a regular 8 sided octagon whose interior angles are 135 degrees and its exterior angles are 45 degrees
What's Greek for 18?
A Regular Polygon
octagon
A triangle
Assuming the question refers to all interior angles of 60 degrees, then the answer is an equilateral triangle. If it is just one angle being 60 degrees, it can be any polygon you like.