Question

Prove that the sum of the measures of the interior angles of a triangle is 180°

Answer 1

heya mate

here is your answer

let
ab //cd and ec is their transversal the 4 = 1 (alternative interior angles )

and also let ab // cd and ed is their transversal then 3 = 5 ( alternative interior angles )

we know that sum of angles at a point is 180*

then 1 + 2 + 3 = 180*

as above 1 = 4 and 3 = 5

so now 4 + 2 + 5 = 180*

4 , 2 and 5 are interior angles of a triangle

hence proved


i hope it helped uh !!
thanks !!