Question

Can someone help me with these 2 questions? I will be so thankfull

Answer 1

1. The angles of the rectangle are each 90.

To find the missing angle you subtract 15 by 90.

∠4 = 90 - 15
∠4 = 75

2. Supplementary angles add up to 180.

42 + x = 180
x = 180 - 42
x = 138