Question

Diketahui jajargenjang KLMN dengan besar sudut K = (2y -15°) dan sudut M = (57 - y).Tentukan besar sudut K,L,dan N !!

Answer 1

< K = < M
2y-15 = 57-y
2y+y = 57+15
3y = 72
y = 24
< K = 2.24-15 = 48-15 = 33°
< L = < N = 180 - < K = 180-33 = 147°