The interior angles of a 9 sided nonagon add up to 1260 degrees and its exterior angles add up to 360 degrees
The exterior angle of a 7 sided shape add up to 360 degrees The interior angles of a 7 sided shape add up to 900 degrees
The interior angles of an 11 sided polygon add up to 1620 degrees
A heptagon is a 7 sided polygon whose interior angles add up to 900 degrees.
In total all 4-sided, 2-dimensional shapes angles' add up to 360 degrees. Depending on the length, width and shape of the polygon.
The angles (rather than angels) of a quadrilateral add up to 360 degrees.
540 degrees 540o
They add up to 3960 degrees
1080 ish.
360
five sides...
180
360
720
540
The exterior angles of a 15 sided shape add up to 360 degrees
The 8 interior angles of an 8 sided octagon add up to 1080 degrees