They add up to 1080 degrees
The interior angles of a 23 sided polygon add up to 3780 degrees
If the interior angles add up to 1800 degrees then it is a 12 sided polygon.
The interior angles of a 16 sided polygon add up to 2520 degrees If it's a regular polygon then each interior angle measures 157.5 degrees
A 10 sided polygon or a decagon has interior angles that add up to 1440 degrees
A triangle is a 3 sided polygon that has 3 interior angles that add up to 180 degrees
The interior angles of a 7 sided polygon add up to 900 degrees
The interior angles of an 11 sided polygon add up to 1620 degrees
The 3 interior angles of a 3 sided polygon which is a triangle add up to 180 degrees.
The interior angles of a 17 sided polygon add up to 2700 degrees
The 13 interior angles of a 13 sided polygon add up to 1,980 degrees
The sum of the interior angles of a 12 sided polygon add up to 1800 degrees.
The interior angles of a 20 sided polygon add up to 3240 degrees
The interior angles of a 19 sided polygon add up to 3060 degrees
The interior angles of an 8 sided octagon add up to 1080 degrees
The interior angles add up to 3240 degrees
The interior angles of an 11 sided polygon add up to 1620 degrees
The interior angles of a 20 sided polygon add up to 3240 degrees