(a)[1]
Point $D$ lies 11 cm from $A$ and 9 cm from $C$. Use the diagram to construct quadrilateral $ABCD$.
(b(i))[1]
Using the diagram, construct the locus of points inside quadrilateral $ABCD$ that are the same distance from $B$ as from $C$.
(b(ii))[1]
From the diagram, construct the locus of points inside quadrilateral $ABCD$ that are equally distant from $AB$ and $BC$.
(c)[1]
The two loci intersect at $P$. Mark $P$ on the diagram and measure $DP$.