Answer:
Explanation:
r and z are complementary which means they equal 90 degrees.
r + z = 90 z = 40
r + 40 = 90 Subtract 40 from each side
r = 50
z and a are corresponding angles and are therefore equal
z = a
a = 40
a + y are supplementary angles. That means that add to 180 degrees.
a + y = 180
a = 40
40 + y = 180
y = 140
x = y. They are vertically opposite angles. All vertically opposite angles are equal to the angle across from them.
x = y
y = 140
x = 140