hany90
hany90
22.06.2021 • 
Mathematics

A. only line r and s must be parallel B. only line t and u must be parallel

C. lines r and s and lines t and u must be parallel

D. Neither lines r and s nor lines t and u must be parallel​


A. only line r and s must be parallel

B. only line t and u must be parallelC. lines r and s and l

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