The formula for the angles of a regular n-gon is 180(n-2)/n. If 180(n-2)/n = 144 then 180n-360 = 144n so 36n = 360 and n=10. This means that a regular decagon has angles measuring 144 degrees.
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540 degrees
108 degrees
No.
The measure of one of the regular octagon angles of the shape is 135 degrees, regardless of the size of the octagon. This means that the interior angles are all 135.
Each of the 6 interior angles is 120 degrees in a hexagon.