Answer:
Option D) (136-2a) + ( 3a + 39) = 180
Step-by-step explanation:
As per provided information .
XQR is a straight line So, sum of all angles formed on straight line is 180° .
This Means
∠XOM + ∠MOR = ∠XQR
On putting the given value we obtain
(136 - 2a) + (3a + 39) = 180
So, the required option is (D) (136 - 2a) + (3a + 39) = 180
You can solve it further to get the value of a .
