Question 12
In the figure below, the point $O$ is the center of the circle, $AD$ and $BC$ intersect at $E$, and $\angle AEB=70^\circ$, $\angle AOB=62^\circ$. Find the angle $\angle OCD$ (in degree $^\circ$).
Editorial note: the retained scan includes handwritten annotations. Only the printed givens transcribed above are used; a new clean checked diagram is supplied in the solution.
Editorial note: the retained scan includes handwritten annotations. Only the printed givens transcribed above are used; a new clean checked diagram is supplied in the solution.