Triangle QST  is similar to triangle PQR
We are given that measure of angle SRP is 90°
Q is the point of the hypotenuse SP 
Segment QR is perpendicular to PS and T is a point outside the triangle on the left of s 
We need to find which triangle is similar to triangle PQR 
So, 
Using Angle - Angle - Angle Criterion We can say that 
m∠PQR = m∠SQR  (AAA similarity)
m∠SQR=m∠SQT (AAA similarity)
Where m∠Q =90°  in ΔQST and PQR
Therefore ΔQST is similar to ΔPQR
Learn more about similarity of triangles here
brainly.com/question/24184322
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