question_answer

In a quadrilateral PQRS, the angles P, Q, R and S are in the ratio \[\mathbf{1}:\mathbf{2}:\mathbf{3}:\mathbf{4}\]. Find the measure of the angle R.

A) \[36{}^\circ \]                    

B)                    \[72{}^\circ \]

C) \[108{}^\circ \]   

D)        \[144{}^\circ \]

E) None of these