Answer:
x = 155°
Step-by-step explanation:
most left upper angle = 180° - 35° - 90° = 55°
inner middle top angle = 180° - 60° - 55° = 65°
inner middle has right angle, that is 90°
inner middle bottom angle is then, 180 - 90° - 65° = 25°
then as x lies on a straight line with 25°
x + 25° = 180°
x = 180° - 25°
x = 155°
