Question

please solve this question in steps i will mark them brainlist​

Answer 1

Answer:

r=20, a=20 vertically opposite angles.

a + b =180 , b= 160

ratio= 1:9

Answer 2

Answer:

sum of interior angles of the same side of transversal is 180°

b+52°=180°

b=180-52

b=128°

and a=52°

b=128°

hence a=52° b=128°