Answer:
x = 42
y = 96
w = 48
z = 84
Explanation:
for x) 90 - 48 to find x b/c 90 is the sum of that right angle so subtracting 48 from 90 would give you the other side.
for y) 190 - 42 - 42 to find y b/c 180 is the sum of a triangle and we know that the top angle is 42 and the bottom angle is 42.
for w) 180 - 90 - 42 to find w b/c the sum of the entire triangle is 180 and we know that the top angle is 90 b/c it's a right angle and we know that the bottom left is 42.
for z) 180 - 48 - 48 for z b/c we know the two angles now b/c we just found w so we can use that to subtract from 180 to get z.