Chapter 2.3, Problem 7PSA

To determine

To Draw: conclusions from given information.

Answer to Problem 7PSA

  $\angle PQS$ And $\angle SQR$ are supplementary.

Explanation of Solution

Given information:

  

As shown in figure, PQR is a line and ray QS stands on PR at Q.

Also, $\angle PQS$ is obtuse and $\angle SQR$ is acute and as these angles from a linear pair, hence the angles are supplementary and hence their sum is ${180}^{\circ }$