Question

find the sum of the measures of the interior angles of the decagon.​

Answer 1

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°