Question
Which pair of lines are perpendicular? Give your answer in number. (Eg 1) 

(1) RW and TU
(2) RS and VU
(3) ST and TU
1 m

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Which pair of lines are perpendicular? Give your answer in number. (Eg 1) 

(1) RW and TU
(2) RS and VU
(3) ST and TU