Answer:
x = 30°, y = 15°, z= 150°
Step-by-step explanation:
90 + x + 2x= 180 - Parts whole postulate
90 + 3x = 180
90 + 3x - 90 = 180 - 90
3x = 90
x = 30
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x=2y - Alternate interior angles
30 = 2y
y = 15
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2y + z = 180 - Parts whole postulate
30 + z = 180
30 + z - 30 = 180 - 30
z = 150
