Write a paragraph proof to prove that if P, Q, R, and S are collinear, PQRS, and O is the midpoint of PR, then R is the midpoint
of QS.

Because PQ RS and congruent segments have ___ lengths, PQ = ___ Because Q is the midpoint of PR, ___ so R is the midpoint of QS. PQ ___ By the Select Choice Property of Equality. QR