if it is a polygon then the total interior angles will equal 1080. so ear angle will be 135 degrees.
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For any polygon, do (sides-2)x180 degrees For an octagon, do (8-2)x180=6x180=960(degrees)
The angles of a 8 sided Polygon is 45 degrees.
It is an octagon which is an 8 sided shape
An octagon
octagon