Given information:
A fence on a hill uses vertical posts L and M to hold parallel rails N and P
The diagram is attached below
Here lines N and P are parallel lines
Transversal line for parallel lines N and P is line L
Calculation:
angle 1 and angle 16 are consecutive exterior angles
If parallel lines are cut by a transversal then consecutive exterior angles are supplementary.
<1 +< 16 = 180
115+ < 16 = 180
< 16 = 180 - 15
< 16 = 65
So measurement of angle 16 = 65 degrees.
