Find the measures of the interior angles.

x=39

Step-by-step explanation:

We know that three angles combine has equal 180 degrees.

180-102=78

78/2=39

I subtracted 102 from 180 to know the degrees of the rest of the two angles combine, then divide the 78 by 2 to find the angles of the individual angles.

Hope this helped you : )  

step-by-step explanation:

by definition, an arc subtended by a central angle of some given measure has the same measure. so .