Answer:

1. ∠B = 90°

2. They are supplimentary

3. x = 1

4. They are Complimentrary

5. y = 10

Step-by-step explanation:

hope this helps :))

sorry, i don't know the answer in number 3 and 5,but hope it helps! ^^

1. If angle B is a right angle, then its measure is 90°.

2. If the measure of angle 1 + measure of angle 2 = 180°, then angle 1 and 2 are supplementary.

4. If angle A + angle B=90, then angle A and B are complementary.