Answer:
z=125
y=30
Step-by-step explanation:
x and z are the same because of the congruent sides then is triangle sum
x=55°
y=70°
z=125°
125 + x = 180
x = 55°
the 2 sides are equal so z = 125°
y = 180 - 2x
y = 180 - 110
y = 70°
