<h2>
Answer:</h2>
The angle that will be congruent to angle 4 is :
Angle 1
<h2>
Step-by-step explanation:</h2>
It is given that:
angle 4 and angle 5 are complements.
Also, angle 1 and angle 5 are complements.
<u>Congruent complementary Theorem--</u>
It states that if two angles are complementary to the same angle, then the two angles are congruent to each other.
Here both angle 1 and angle 4 are complementary to the same angle i.e. angle 5.
Hence, angle 1 and angle 4 will be congruent to each other.