9514 1404 393
Answer:
Explanation:
As is usually the case, the figure is not drawn to scale.
Angles 3, 4, and 5 together form a linear angle.
(x +18) +(x +15) +(4x +3) = 180
6x +36 = 180
x +6 = 30
x = 24
Angle 1 is a vertical angle with respect to angle 3, so has the same measure. That measure is ...
∠1 = ∠3 = x +18 = 24 +18 = 42 . . . . degrees
In order for congruent angles to be complementary, they would both have to be 45°. Neither of angles 1 and 3 have this measure.
Angles 1 and 3 are not complementary.