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Are l1 and l2 parallel?

This topic has 1 expert reply and 0 member replies

Are l1 and l2 parallel?

Post Wed Sep 20, 2017 4:08 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Are l1 and l2 parallel?

    (1) l1 intersects l3 at a 45° angle.

    (2) l3 intersects l2 at a 45° angle.


    What's the best way to determine whether statement 1 is sufficient?

    Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
    Post Wed Sep 20, 2017 10:51 pm
    ardz24 wrote:
    Are l1 and l2 parallel?

    (1) l1 intersects l3 at a 45° angle.
    (2) l3 intersects l2 at a 45° angle.

    What's the best way to determine whether statement 1 is sufficient?
    Statement 1: L1 intersects L3 at a 45° angle.

    It does not provide any information about L2. Insufficient.

    Statement 2: L3 intersects L2 at a 45° angle.

    Does not provide any information about L1. Insufficient.

    Statement 1 & 2:

    Refer to the image; L1 and L2 can be either perpendicular or parallel.



    No unique answer.

    The correct answer: E

    Hope this helps!

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    Thanked by: ardz24

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