Answer:
50+P=125 exterior angle of the triangle is equal to the sum of two opposite interior angle
P=125-50=75°
q+125=180 linear pair
q=180-125=55°
r=q=55° vertically opposite angle
s+85=125 exterior angle of the triangle is equal to the sum of two opposite interior angle
s=125-85=40°
s+t=180 linear pair
t=180-40=140°
u=s=40° vertically opposite angle
w=65° vertically opposite angle
v+u+w=180 sum of interior angle of the triangle is 180
v+40+65=180
v=180-105=75°
x+65=180 linear pair
x=180-65=115°
