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# In the figure above, QRS is a straight and line TR bisects

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Director
Joined: 23 May 2008
Posts: 743
In the figure above, QRS is a straight and line TR bisects [#permalink]

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07 Oct 2008, 00:47
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In the figure above, QRS is a straight and line TR bisects angle PRS, is it true that lines TR and PQ are parallel?

1) PQ=PR

2) QR=PR

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VP
Joined: 17 Jun 2008
Posts: 1479

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07 Oct 2008, 03:45

B tells that angle RQP and angle RPQ are equal and since angle PRS is the sum of angles RQP and RPQ and also since TR bisects angle PRS, hence angle SRT equals angle RQP and hence TR is parallel to PQ.
Director
Joined: 23 May 2008
Posts: 743

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07 Oct 2008, 09:42

I forgot about the rule that exterior angle=sum of non adjacent angles

http://www.regentsprep.org/Regents/math ... ExtAng.htm
Senior Manager
Joined: 21 Apr 2008
Posts: 265
Location: Motortown

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01 Nov 2008, 13:07

QPR=PQR

2*QPR +PRQ = 2*PRT + PRQ
QPR = PRQ - Suff

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: DS: veritas prep   [#permalink] 01 Nov 2008, 13:07
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