Question

Determine the value of a.​

Answer 1

Answer:

4a+4a+a=180°

9a=180°

a=180/9

or, a=20°ans.

Answer 2

Answer:

angle poq=angle sor ( vertically opp)

angle (sor+roq+qop)=180degree

4a+4a+a=180 degree

9a=180degree

a=180/9

a=20