Answer :
Final answer:
Lines QP and QR form a straight line because angles RQS and PQS are supplementary, adding up to 180 degrees.
Explanation:
In this problem, angles RQS and PQS are said to add up to 180°. This indicates that these angles form a linear pair, which implies that lines QP and QR are straight lines. In any geometric figure, if two angles add up to 180 degrees, it denotes that they are supplementary angles, and the lines forming these angles would be in the same line or straight. Thus, line segments QP and QR are in a straight line or collinear.
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