Answer:
All given information leads to conclusion described on statement. ([tex]QR = RS[/tex])
Step-by-step explanation:
The strategy of problem consist in make a mathematical demonstration from given information. There are two assumptions: i) [tex]R[/tex] is a point of segment [tex]QS[/tex] and ii) [tex]R[/tex] is the midpoint of [tex]QS[/tex]. We proceed to perform the demonstration:
1) [tex]R\in QS[/tex], [tex]R[/tex] is the midpoint of [tex]QS[/tex]. Given.
2) [tex]Q - R = R -S[/tex] Definition of midpoint.
3) [tex]QR = RS[/tex] Definition of segment/Result.
All given information leads to conclusion described on statement. ([tex]QR = RS[/tex])