Question 1102555
Interior angle of 8460' how many sides does the polygon have
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If it's not a regular polygon, you have to spec the other angles.
Then # of angles = # of sides.
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8460' = 141 degs
Not a regluar polygon.  See above.
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if you mean 8460 degs and it's a regular polygon:
180*(n-2) = 8460
Solve for n