Question

congruence of triangle.​

Answer 1

Answer:

the sum of all angles of a triangle is 180

so, 32 + 78 + x = 180

x = 180 - 110

x = 70

angle x + angle y = 180 since it is a straight line

70 + y = 180

y = 110 degree

Alternative method:

sum of the opposite interior angles is equal to the exterior angle

therefore, 32 + 78 = y

y = 110 degree