The diagram depicts two parallel lines cut by a straight line. One angle is labelled $40^\circ$, and a second angle on the top line is marked $x$. The diagram is NOT TO SCALE.
(main)[1]
Complete the statement by supplying the correct geometrical reason. $x = 40^\circ$ because the angles are [BLANK].
Worked solution & mark scheme
This 1-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Corresponding angles” …