Answer:
5+4 = 9
6+4 = 10
7+4 =11
Step-by-step explanation:
One way to do this is use the fact that the exterior angles of all polygons add up to 360 degrees
So an exterior angle of a regular octagon = 360 / 8 = 45 degrees.
So each interior angle = 180 - 45 = 135 degrees
so total measure of all angles in octagon = 8 * 135 = 1080 degrees
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I would say the answer is C. It has been a while since I’ve taken geometry but I am pretty sure the angle would be the middle letter.
