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]

or, x+90°=180°

or, x=180°-90 or, x=90° Therefore x=90°

Again,

x=y [vertically opposite angles]

therefore, y=90°