In the diagram
[tex]\begin{gathered} \angle D\cong\angle W \\ DH\cong WP \\ HG\cong PT \end{gathered}[/tex]
Therefore, we have the following:
[tex]\begin{gathered} (a)\triangle\text{DHG}\cong\triangle\text{WPT} \\ (b)\triangle\text{HGD}\cong\triangle\text{PTW} \\ (c)\triangle GDH\cong\triangle T\text{WP} \end{gathered}[/tex]
