Question

Hi I have a question ^^


Use ΔPQR below to answer the question that follows:
Which fact is not used to prove that PQR is similar to STR?

Segments ST and PQ are parallel.
Angle P is congruent to itself due to the reflexive property.
RP is a transversal line passing ST and PQ.
Angles RTS and RQP are congruent due to the Corresponding Angles Postulate.
http://learn.flvs.net/webdav/assessment_images/educator_geometry/v15/module05/05_01_03a.jpg


Which fact is not used to prove that PQR is similar to STR?


Segment ST and QR are parallel