540 degrees 540o
The angles (rather than angels) of a quadrilateral add up to 360 degrees.
720
360
180
540
The angles (rather than angels) of a quadrilateral add up to 360 degrees.
The 7 interior angles add up to 900 degrees
720
360
180
540
1080 ish.
360
five sides...
They add up to 3960 degrees
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