Answer:
x=30°
y=15°
z=150°
Explanation:
2x+90+x=180°
2x=180°-90°
x=90/3
x=30
2y=x
y= 30/2
2y°+z°=180°
2(15°)+z°=180°
z=180°-30°
Hope it helps! :)
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