(a(i))[1]
Find $x$.
(a(ii))[2]
Calculate the length of $EZ$.
(b)[3]
Find angle $ADC$.
(c(i))[2]
Complete this statement: Angle $QPS$ = angle $QRS$ = ............ $^\circ$ because ................................................
(c(ii))[2]
Complete this statement: Angle $SQP$ = ............ $^\circ$ because ................................................
(c(iii))[1]
The results of part (c)(i) and part (c)(ii) show that the cyclic quadrilateral $PQRS$ is a ................................................