Answer:
QR & ST ---> Parallel
ST & QS ---> Perpendicular
RT & QR ---> Perpendicular
QS & RT ---> Parallel
Step-by-step explanation:
2 lines are said to be parallel lines if they will never intersect with each other.
2 lines are said to be perpendicular lines if angle between both the lines are 90°.
2 > 1
-6 < -3 to -6/-3 > -3/-3 to 2 > 1
When dividing or multiplying by a negative, flip the inequality sign.