The diagram shows $AB$ parallel to $DC$, while $AC$ and $BD$ meet at $E$.
Triangle $ADE$ is right-angled and isosceles, with $AD = DE$. $\angle ABD = 25^\circ$.
(main)[2]
Find the value of $x$.
Worked solution & mark scheme
This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Accurate angle reasoning” …