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Step-by-step explanation:
x=w (Corresponding angles)
Solve for a:
a + 10 = 90 - a
Add a to both sides:
a + a + 10 = (a - a) + 90
a - a = 0:
a + a + 10 = 90
a + a = 2 a:
2 a + 10 = 90
Subtract 10 from both sides:
2 a + (10 - 10) = 90 - 10
10 - 10 = 0:
2 a = 90 - 10
90 - 10 = 80:
2 a = 80
Divide both sides of 2 a = 80 by 2:
(2 a)/2 = 80/2
2/2 = 1:
a = 80/2
The gcd of 80 and 2 is 2, so 80/2 = (2×40)/(2×1) = 2/2×40 = 40:
a = 40
So angle x and w equals 50.
z=y Corresponding angles)
90- angle x or w Linear pair)
90-50=40
So, angle y and z equal to 40
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