[tex]\begin{gathered} (a)\text{ GJ=ZX=}1\text{8 ft} \\ (b)\text{ }XY=HG=HJ=\text{27 ft} \\ (c)\text{ }ZY=XY=\text{27 ft} \\ (d)\text{ }\angle H=\angle y=18^{\circ} \\ (e)HJ^2=HG^2+GJ^2-2\times HG\times GJ\times\cos \theta \\ \Rightarrow27^2=27^2+18^2-2\times27\times18\times\cos \theta \\ \Rightarrow18^2=2\times27\times18\times\cos \theta \\ \Rightarrow\theta=\text{70}.53^{\circ}=\angle G=\angle Z \\ (f)\angle J=\angle X=\text{70.}53^{\circ} \end{gathered}[/tex]
