a triangle: varies between obtuse,right,and acute
a square/rectangle: 90 degrees on every edge
a pentagon, a hexagon, a heptagon, a octagon, a nonagon, a decagon, and so on all depend on the shape. each of these can have every degree
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Each interior angle is: 1520 18' 27.69''
170.27 degrees
Providing that it is a regular 15 sided polygon then each interior angle will be 156 degrees
Each interior angle of the regular 8 sided octagon measures 135 degrees
The exterior angle is 360/32 = 11.25 Therefore the interior angle is 180 - 11.25 = 168.75