Vertically opposite angles are equal: angle LOK = angle JOM = 100°.
• JOK and LOM are straight lines meeting at O
• Vertically opposite angles: angle LOK = angle JOM = 100°
• Since JON = 54° and J, O, N lie between J and M:
• Angle MON = angle JOM − angle JON = 100° − 54° = 46°
Final Answer: 46