Answer:
Step-by-step explanation:
angle b+45 degree=110 degree (because they are vertically opposite angle and vertically opposite angle are always equal)
angle b=110-45
angle b=65 degree
angle a + angle b + 45 degree = 180 degree (being linear pair)
angle a + 65 + 45 =180
angle a + 110=180
angle a=180-110
angle a=70 degree
angle c + 20 degree=angle a (because they are vertically opposite angle and vertically opposite angle are always equal)
angle c + 20 = 70
angle c = 70 - 20
angle c =50 degree
Note: A linear pair is a pair of adjacent angles formed when two lines intersect.
Hope this helps u !!
