Question

plz solve this question tommorow is my exam​

Answer 1

Step-by-step explanation:

In ∆ABC

A+ B = Angle2. (exterior Angle)

B = Angle2 -A

C+A = Angle 1 ( exterior Angle)

C= angle1 - A

Now, C + Angle 2 = 180°

Angle 1 - A + Angle 2 = 180°

Angle1 + Angle2 = 180+ A

since,

Angle 1 + Angle 2 = 180 +A

then , that implies

Angle 1 + Angle 2 > 180°

Hence proven