Answer:
Assuming the angles are complementary.
A and A
Explanation:
I'm assuming the angles form 90 degree angles or right angles known as complementary angles. If this is the case then 40 + x = 90. So the measure of angle 5 should be 50.
For an angle that measures 37, 37 + x = 90. So the measure of angle 4 should be 53.