number of sides minus 2 times 180
8-2 x 180
6 x 180
1080 dg
evry angle is 1080/8 dg
135 degrees
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The degrees in a 19 sided polygon add up to 3,060 degrees
If the 135-degree polygon is a regular polygon and each interior angle measures 135 degrees then the polygon is an eight-sided octagon
eight angles
The interior angles of an 11 sided polygon add up to 1620 degrees
It has 540 degrees because a five sided polygon has three triangles in it, and sinnce a triangle equals 180 degrees, 3 x 180= 540.