Interior angles add up to 1080 degrees
Exterior angles add up to 360 degrees
So: 1080+360 = 1440 degrees
The sum of all the interior angles of a regular octagon is 360 degrees.
The interior angles of any 8 sided octagon add up to 1080 degrees
The exterior angles of an octagon total 360 degrees.
Individual angles in an octagon can have any measure - anything between 0 and 360 degrees. Only the sum of the angles has to total a certain amount (in the case of the octagon, 6 x 180 degrees). A regular octagon has internal angles of 135 degrees and external angles of 45 degrees.
In a regular octagon, the circle circumscribing it has eight equal arcs, as the octagon has eight sides. The total measure of a circle is 360 degrees, so each arc measures 360 degrees divided by 8. Therefore, each arc in a circle circumscribed by a regular octagon measures 45 degrees.
Each interior angle of a regular hexagon measures 120 degrees. It has a total of 720 degrees of interior angles and a total of 360 degrees of exterior angles.
Eight - that is why it is called an octagon.
the total measure of a regular octagon is 1080 degrees
360
if you are talking about a regular octagon. or any polygon, Take the number of sides ( 8 for an Octagon) minus 2 and multiply by 180 for the total of all interior angles. (8-2)180 = 1080 divide this by the 8 angles for the measure of each individual angle. 1080/8 = 135 By the way a "regular" polygon is one where all the sides and angles are the same. Good luck.
1800 degrees in total
In total the interior angles add to (8-2)*180 = 6*180 = 1080 degrees. IF the octagon is regular, so that all of its angles are equal, then each one is 1080/8 = 135 degrees.