m∠6 = 115°
Since j & k lines are parallel that means 1 and 5 are the same degree.
That being said the angles 6 and 5 are supplementary angles meaning the sum of the measure of their angles is equal to 180°
So, since m∠1 = 65°... m∠5 = 65°
Now we can subtract 65 from 180 to find the m∠6
180 - 65 = 115
m∠6 = 115°
I hope this helped! :))