Jawaban:
15. OLM = 52
PLO = PLM – OLM
x = 90 -52 = 38
OML = 40
OMN = 180 – OML
y = 180-40 = 140
y-x = 140-38 = 102
Jawab : B
16. Misal ABD = x
ABD = CBF = x
CBE = 55
CBF + EBF = 55
x + EBF = 55
EBF = 55-x
ABF = 153
ABD + DBE + EBF = 153
x + DBE + 55-x = 153
DBE + 55 = 153
DBE = 153-55
DBE = 98
Jawab A
