Question 976152
*[illustration Pent.jpg].

The single angles, N, K are each 108. 3 triangles must add to 180*3=540, then divide by 5. 

a) 108
b) Since JKL is isosceles, we take 180-108=72 and divide  72/2 = 36 each
c) also 108
d) NML is 108 and NMJ is 36 so 108-36=72 each
e) 180-144=36