Step-by-step explanation:
y= 80 because alternate angles are equal
80+57=137
180-137= 43 because angles in a triangle add up to equal to 180
z= 43
180-80= 100
the angle P is 90 so 100+80+90=270
360-270=90 as the sum of the angles in a quadrilateral its 360
so
x= 90
y= 80
z= 43
hope that helped! :)
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