The interior angles of a triangle add up to 180 degrees. Every time you add an angle, you add another 180 degrees (mark a point on a side of a polygon and call it a straight angle; that is not exactly a proof but it makes it reasonable that it is true). So the total is 180 times 2 less than the number of sides.
The exterior angles of a polygon add up to 360 degrees.
The degrees in a 19 sided polygon add up to 3,060 degrees
A polygon of 15 sides has interior angles that add up to 2340 degrees.
The interior angles of a 13 sided polygon add up to 1980 degrees
The exterior angles of any polygon add up to 360 degrees.
what polygon has angle measures that add up to 360
Interior degrees add up to 1080 degrees Exterior degrees add up to 360 degrees
The 4 interior angles of 4 sided quadrilaterals add up to 360 degrees The exterior angles of any polygon add up to 360 degrees
Exterior angles add up to 360 degrees Interior angles add up to 720 degrees.
The interior angles of a 7 sided polygon add up to 900 degrees
A 13 sided polygon interior angles add up to 1980 degrees
An 8 sided polygon is an octagon and has exterior angles that add up to 360 degrees and its interior angles add up to 1080 degrees