Its telling me to find x and the measure of each angle

help its telling me to find x and the measure of each angle

Step-by-step explanation:

the sum of the interior angles is 180°

180 : 2 = 5x + 4x

90 = 9x

x = 10

check

5 * 10 + 4 * 10 = 90

the answer is good

now we find the angles

5x + 4x = 90

5 * 10 = 50 °

4 * 10 = 40°

check

50 + 40 = 90°

the answer is good

im guessing (23,14). hope this : )