Question

How to solve this figure question

Answer 1

a is 180-70= 110
i guess because parallek angles are equal
hope this helps

Answer 2

a=110
construction
:
increase the line of angle a till 70 degree line
see the corresponding angle of 70 degree from the new line
then you will see the 70 degree and a are co-interior angles
therefore their sum will be =180
a+70=180
a=110;