n-sided polygon, interior angles (2n - 4) right angles or 180n - 360 degrees.
180n - 360 = 1080
180n = 1440
n = 8
It's an octagon.
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The interior angles of an octagon add up to 1080 degrees 1080 degrees in total, 135 each.
The 8 interior angles of an 8 sided octagon add up to 1080 degrees
An octagon has interior angles of 1080 degrees.
1080 degrees
Exterior angles = 360 degrees Interior angles = 1080 degrees