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# Are l1 and l2 parallel?

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Intern
Joined: 27 Mar 2017
Posts: 3
Are l1 and l2 parallel?  [#permalink]

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28 Mar 2017, 13:04
1
00:00

Difficulty:

35% (medium)

Question Stats:

57% (00:43) correct 43% (00:56) wrong based on 76 sessions

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Are l1 and l2 parallel?

(1) l1 intersects l3 at a 45° angle.

(2) l3 intersects l2 at a 45° angle.

Thank you
Manager
Joined: 05 Apr 2014
Posts: 138
Location: India
Schools: ISB '19, Fox"19
GMAT 1: 660 Q48 V33
GPA: 3

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28 Mar 2017, 13:12
The lines can be parallel ir perpendicular

Posted from my mobile device
Status: Preparing for GMAT
Joined: 25 Nov 2015
Posts: 1001
Location: India
GPA: 3.64
Re: Are l1 and l2 parallel?  [#permalink]

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07 Sep 2017, 10:11
jrpf08 wrote:
Are l1 and l2 parallel?

(1) l1 intersects l3 at a 45° angle.

(2) l3 intersects l2 at a 45° angle.

Thank you :!:

Each of the lines intersecting could be l1, l3.
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Are l1 and l2 parallel?  [#permalink]

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08 Sep 2017, 07:11
jrpf08 wrote:
Are l1 and l2 parallel?

(1) l1 intersects l3 at a 45° angle.

(2) l3 intersects l2 at a 45° angle.

Thank you :!:

(1) l1 intersects l3 at a 45° angle.

Does not provide any information about l2. Hence I is Not sufficient.

(2) l3 intersects l2 at a 45° angle.

Does not provide any information about l1. Hence II is Not sufficient.

Combined (1) and (2);

When we draw the lines we get, l1 and l2 can be either perpendicular or parallel.

Are l1 and l2 parallel?   [#permalink] 08 Sep 2017, 07:11
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