find the sum of the measures of the interior angles of the decagon.
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Step-by-step explanation:
A decagon is a polygon of ten sides
we know that the formula for the sum of interior
angles of a polygon of n-sides is
(n-2) 180°
decagon has ten sides there fore n=10
substituting n=10 in above equation
(10-2)180°=8(180°)
=1440°
there fore the sum of measures of the interor angles
of the decagon =1440°
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