Sum of interior angles = 180
180 - 60 = 120
120/4 = 30
m<L = m<A = 60
m<M = 30
m<C = m<N = 3(m<M) = 3(30) = 90
Answer:

Step-by-step explanation:


















Hence, the correct answer is 
Answer: Earth: radius = 6378 kilometer, diameter = 12756 kilometers.
Because it is in the middle of those given points