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# Standard lengths of right triangles

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Manager
Joined: 10 Aug 2009
Posts: 122

Kudos [?]: 17 [0], given: 13

Standard lengths of right triangles [#permalink]

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28 Feb 2010, 04:33
Hi,

I just did Kaplan's free online test (I only got a 650 how does this relate to the real GMAT as I heard Kaplan is sometimes harder?) and one of the questions I got wrong was related to right angle triangles.
I knew that a 45-45-90 triangle has sides of length x-x-sqrt(2)x, but what I didn't know was the ratio of the sides of a 30-60-90 triangle. What other right angle triangle ratios must I know for the GMAT?

Kudos [?]: 17 [0], given: 13

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CEO
Joined: 17 Nov 2007
Posts: 3583

Kudos [?]: 4661 [0], given: 360

Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Re: Standard lengths of right triangles [#permalink]

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28 Feb 2010, 07:21

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Manager
Joined: 30 Jun 2004
Posts: 176

Kudos [?]: 28 [0], given: 5

Location: Singapore
Re: Standard lengths of right triangles [#permalink]

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02 Mar 2010, 23:46
650 is a good score on Kaplan. Generally, one can expect 50-70 more points in actual GMAT score as compared to Kaplan score.

Kudos [?]: 28 [0], given: 5

Manager
Joined: 10 Aug 2009
Posts: 122

Kudos [?]: 17 [0], given: 13

Re: Standard lengths of right triangles [#permalink]

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03 Mar 2010, 04:19
tarun wrote:
650 is a good score on Kaplan. Generally, one can expect 50-70 more points in actual GMAT score as compared to Kaplan score.

Thanks. Yesterday I tried to do the Manhattan GMAT free test. It was terrible! Maybe it was because I was sick, but the questions seemed very difficult (much more so than the ones in the official guide and the Kaplan test). Was this something others have noticed? I didn't get the score yet because I didn't complete the verbal section, but I know that I did poorly in the quant section.

Kudos [?]: 17 [0], given: 13

Kaplan GMAT Instructor
Joined: 25 Aug 2009
Posts: 644

Kudos [?]: 306 [0], given: 2

Location: Cambridge, MA
Re: Standard lengths of right triangles [#permalink]

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03 Mar 2010, 13:49
tarun wrote:
650 is a good score on Kaplan. Generally, one can expect 50-70 more points in actual GMAT score as compared to Kaplan score.
Actually, this is no longer the case. Several years ago, we had non-adaptive online tests and paper based tests; we dropped that ball on those. However, all of our current CATs are as close to the real test as we can make them.

Still, a 650 is a great score regardless! Remember, your diagnostic is the floor, not the ceiling--there's nowhere to go but up!
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Kudos [?]: 306 [0], given: 2

Re: Standard lengths of right triangles   [#permalink] 03 Mar 2010, 13:49
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