Question

Prove that the sum of the angles of a triangle is 180

Answer 1

here is ur answer:


Given: let ∆ABC


To prove : sum of all angles is 180°


Construction: draw PQ | | AB


Proof:

angle 1 = angle A. { alt. int. angle }

angle 2 = angle B { alt. int. angle }


angle 1 + angle C + angle 2 = 180°

angle A + angle C + angle B = 180°

sum of angles of ∆ = 180°


hence proved.




hope it helps you!
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Answer 2

Answer:

see the attachment ⤴️⤴️⤴️