tolong dijawab ya!!.... please..!!

a) L EOF = L AOB = 35° ( dua sudut bertolak belakang)
b) L GOH = L DOC = 38° ( dua sudut bertolak belakang)
C) L BOC = 90 - (38+35)
= 90 - 73
= 17°
d) L GOA = L AOH + L GOH
= 90 + 38
= 128°