Prob 2.png
 
In the figure if \(x\) \(=\) \(20^{\circ}\), then the angle \(PRS\) is ___________
 
Solution:
 
\(ORS\) is a\an triangle
 
\(\angle ORS\) \(=\) \(^{\circ}\)
 
Angle \(PRS\) \(=\) \(^{\circ}\)