Does anyone know which angles are complementary

A complementary angle is 2 angels that add up to 90 degrees. So the answer would be angles 4 and 1. Angle 2 and angle 5 are alredy 90 degrees on there own.

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.