Since angle LMN = angle PQR, angle M = angle Q
Since angle Q = 55 degrees, Angle M also = 55 degrees
We know that the three angles of a trainangle should be equal to 180 degrees
So, L + M + N = 180
Angle L is the unkown x
x + 55 + 39 = 180
x +94 =180
x = 180-94
x = 86 degrees
