Question

solve this problem ​

Answer 1

Answer:

Explanation:

Given:- a+b=c+d

To prove:- LOM IS A STRIGHT LINE

PROOF:- A+B+C+D = 360°(COMPLETE ANGLE)

A+B+A+B=360°(WE KNOW C+D=A+B WHICH IS GIVEN)

2(A+B)=360°

A+B = 180°

Since angle a and b sums 180 and are adjacent thus form a linear pair and a linear pair always exist on a straight line therefore LOM IS A STRAIGHT LINE,hence proved.