Answer:
d=9.220
Step-by-step explanation:
115+(4n-5)=180 115+4n-5=180. 4n=70 n=15
we know that
The sum of all interior angles in the polygon is equal to the formula
where
n is the number of sides of the polygon
In this problem we have
substitute the value in the formula
<u>Find the value of x</u>
therefore
<u>the answer is</u>
the measure of x is
The gcm is 30 and the lcm is 5