(a)[1]
Find $x$.
(b)[1]
Find $y$.
(c)[1]
Find $z$.
(d)[1]
Find $t$.
Mathematics 4024 · O Level · Circle theorems I
Circle theorems I — practice question
In the diagram, the points $A,B,C,D$ and $E$ are on the circle with centre $O$. The points $B,O$ and $E$ are collinear. $AB$ is parallel to $ED$ and $\angle DEO = 53^\circ$.