Question

What is the measure of angle B in degrees?

Answer 1

Calculate the angle x.

Angle on straight line is 180^o.

132^o+x=180^o

x=180^o-132^o

   =48^o

Sum of the angles in triangle is 180^o.

x+y+40 = 180^o

48+y+40 = 180^o

48+y =180

y=180-48

  =92^o