Question

Prove that sum of the angles of a triangle is 180°
and find ∠B in the diagram given below

Answer 1

Answer:

Interior angle of c = 80 (alternate angle). So,

40+80+ x = 180

110 + x = 180

X = 180-110 =70

x= 60 degree

Hence angle b is 60 degree

Step-by-step explanation:

Let angle b be x

Interior angle of c is 180 - 100 =80 ( alternate angle)

Sum of triangle = 180 degree

40 + 80 + x = 180

X= 180 - 120

X = 60