30 POINTS FIR THE ANSWERS. PLEASE Find the value of X.
50°
90°
100°

What is the sum of the measures of the exterior angles. One at each vertex, of a nonagon?

A. 180 degrees
B. 1260 degrees
C. 1080 degrees
D. 360 degrees

The sum of the interior of a polygon is 2,340 degrees. How many sides does they polygon have?

What is the measure of each interior angle of a regular pentagon?

ABCD is an isosceles trapezoid is with legs AB and CD base BC. AB= 7y-4. BC=4y-6 and CD=8y-18. What equation would you set up in order to find y?