(a)[2]
Point $C$ lies above $AB$, with $AC = 5\text{ cm}$ and $BC = 7\text{ cm}$. Use a pair of compasses and a ruler only to construct triangle $ABC$.
(b)[2]
Point $D$ lies below $AB$, with $\angle BAD = 28^\circ$ and $\angle ABD = 96^\circ$. Use a protractor and a ruler to draw triangle $ABD$.