I don’t get this at all help and fast

Angle 4 is complementary to Angle 5 .

hence,

Step-by-step explanation:

here in the figure,

Angle 1 + Angle 4 + Angle 5 = 180°

( since they form straight line )

( linear pair )

so , 90° + angle 4 + angle 5 = 180°

=》angle 4 + angle 4 = 180° - 90° = 90°

hence, angle 4 and angle 5 are complementary

download photomath it will give you the answer and show u the steps