We can say that the two triangles are identical, then, the angle GPK is equal to the angle KPH, then we write the following equation:
![\begin{gathered} \angle GPK=\angle KPH \\ \\ 18x+5=14x+15 \\ \\ 4x=10 \\ \\ x=(10)/(4)=(5)/(2)=2.5 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/f5mrqv18ibeedvk6x2oppz02ip125tpfg8.png)
Now we know the value of x, we can return to the equation and find the value of the angle GPK
![\begin{gathered} \angle GPK=18x+5 \\ \\ \operatorname{\angle}GPK=18\cdot(5)/(2)+5 \\ \\ \operatorname{\angle}GPK=9\cdot5+5 \\ \\ \operatorname{\angle}GPK=45+5 \\ \\ \angle GPK=50 \end{gathered}]()
Therefore, the measure of the angle GPK is equal to 50 degrees