Question

n the figure below, angle y and angle x form vertical angles. Angle x forms a straight line with the 50° angle and the 40° angle.

Answer 1

Answer: x+40°+50°=180° [linear pair]

Answer: x+40°+50°=180° [linear pair]or, x+90°=180°

Answer: x+40°+50°=180° [linear pair]or, x+90°=180°or, x=180°-90

or, x=90°

or, x=90°Therefore x=90°

or, x=90°Therefore x=90°Again,

or, x=90°Therefore x=90°Again,x=y [vertically opposite angles] Therefore, y= 90°