Answer:
85 degrees
Step-by-step explanation:
since all angles in a parallelogram add up to 360 degrees, and we know that angles M and P are equal, we can double their measures to get 190 degrees. This leaves 170 degrees left to split evenly between angles L and N, making each one 85 degrees.
(s + 1)(s - 1) = s^2 - 1
= 19-1 = 18
