Example Question - kite-like figure

Finding the Value of an Angle in a Kite-like Figure

\begin{align*} m\angle EAD + m\angle ADC + m\angle DAB &= 180^\circ \quad \text{(Sum of interior angles of $\triangle ADB$)} \\ x + 118^\circ + 30^\circ &= 180^\circ \\ x + 148^\circ &= 180^\circ \\ x &= 180^\circ - 148^\circ \\ x &= 32^\circ \end{align*}