name it

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sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members; Location: India; Thanked: 267 times; GMAT Score:760

by sanju09 » Wed Feb 25, 2009 3:28 am

Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite

The mind is everything. What you think you become. -Lord Buddha

Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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Source: Beat The GMAT — Problem Solving | Wed Feb 25, 2009 3:28 am

bmlaud: Master | Next Rank: 500 Posts; Posts: 174; Joined: Thu Jan 08, 2009 12:04 am; Thanked: 5 times; GMAT Score:620

by bmlaud » Wed Feb 25, 2009 4:54 am

IMO C

the opposite sides are parallel and equal
the angle between adjacent sides is not 90 degrees.

"Great works are performed not by strength but by perseverance."

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Aswin: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Tue Jan 27, 2009 8:33 pm

by Aswin » Wed Feb 25, 2009 5:09 am

whats the answer ? Is it D ?

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bluementor: Master | Next Rank: 500 Posts; Posts: 418; Joined: Wed Jun 11, 2008 5:29 am; Thanked: 65 times

by bluementor » Wed Feb 25, 2009 5:22 am

IMO its D.

Try sketching it and you will see that AB is parallel to CD (and AD is parallel to BC) based on their slopes.

-BM-

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x2suresh: Master | Next Rank: 500 Posts; Posts: 258; Joined: Thu Aug 07, 2008 5:32 am; Thanked: 16 times

Re: name it

by x2suresh » Wed Feb 25, 2009 7:33 am

sanju09 wrote:Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite

a rhombus is an equilateral parallelogram. In other words, it is a four-sided polygon in which every side has the same length
also in rhombus diagnols intersect perpendicularly each other.

Clearly here 4 sides are equal and diagnols are perpendicular.

C

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marcusking: Master | Next Rank: 500 Posts; Posts: 106; Joined: Wed Feb 04, 2009 6:09 am; Location: Louisville, KY; Thanked: 8 times

Re: name it

by marcusking » Wed Feb 25, 2009 7:38 am

sanju09 wrote:Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite

I'm not sure if other users feel this way, but I find all of these posts a bit distracting. It seems like a lot of the questions you post aren't for your personal growth and don't seem like actual GMAT questions. I think it may benefit the board if we were to create a sticky post similar to what Sureshbala did for his 780+ aspirants questions and have you stick all of your questions in there. I appreciate the challenging questions you ask but I'm worried that some peoples post about questions that they genuinely struggle with may get lost in the mix.

Hope to not offend anyone, I just want to make the forum as useful as possible.

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bluementor: Master | Next Rank: 500 Posts; Posts: 418; Joined: Wed Jun 11, 2008 5:29 am; Thanked: 65 times

Re: name it

by bluementor » Wed Feb 25, 2009 7:46 am

x2suresh wrote: a rhombus is an equilateral parallelogram. In other words, it is a four-sided polygon in which every side has the same length
also in rhombus diagnols intersect perpendicularly each other.

Clearly here 4 sides are equal and diagnols are perpendicular.

C

You are right... all 4 sides have equal lengths, hence it is a rhombus. C.

-BM-

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x2suresh: Master | Next Rank: 500 Posts; Posts: 258; Joined: Thu Aug 07, 2008 5:32 am; Thanked: 16 times

Re: name it

by x2suresh » Wed Feb 25, 2009 7:48 am

marcusking wrote:
sanju09 wrote:Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite
I'm not sure if other users feel this way, but I find all of these posts a bit distracting. It seems like a lot of the questions you post aren't for your personal growth and don't seem like actual GMAT questions. I think it may benefit the board if we were to create a sticky post similar to what Sureshbala did for his 780+ aspirants questions and have you stick all of your questions in there. I appreciate the challenging questions you ask but I'm worried that some peoples post about questions that they genuinely struggle with may get lost in the mix.

Hope to not offend anyone, I just want to make the forum as useful as possible.

100% agree with you.
I believe they may be related to CAT (INDIAN MBA admission test) also.

Good to solve the really nice problems. But, it is better to make sticky thread like "SURESH BALA"s posts..

Sanju,
I don't see you posting OA or explanation for the most of your questions.
Please post the Source of the question too.

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dendude: Master | Next Rank: 500 Posts; Posts: 160; Joined: Fri May 30, 2008 7:10 pm; Thanked: 10 times; GMAT Score:600

Re: name it

by dendude » Wed Feb 25, 2009 11:15 am

x2suresh wrote:
marcusking wrote:
sanju09 wrote:Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite
I'm not sure if other users feel this way, but I find all of these posts a bit distracting. It seems like a lot of the questions you post aren't for your personal growth and don't seem like actual GMAT questions. I think it may benefit the board if we were to create a sticky post similar to what Sureshbala did for his 780+ aspirants questions and have you stick all of your questions in there. I appreciate the challenging questions you ask but I'm worried that some peoples post about questions that they genuinely struggle with may get lost in the mix.

Hope to not offend anyone, I just want to make the forum as useful as possible.
100% agree with you.
I believe they may be related to CAT (INDIAN MBA admission test) also.

Good to solve the really nice problems. But, it is better to make sticky thread like "SURESH BALA"s posts..

Sanju,
I don't see you posting OA or explanation for the most of your questions.
Please post the Source of the question too.

I agree as well.
If these are questions from the CAT, we definitely DO NOT want it posted on this forum which is purely for the GMAT.
I know questions on the CAT are harder and more challenging and it probably would be good to try harder questions but the focus over here is questions that are likely to appear on the GMAT.
Various approaches on GMAT questions are surely welcome but once again, the idea is to stick to the GMAT Curriculum (if you could call it that) as far as possible.

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sanju09: GMAT Instructor; Posts: 3650; Joined: Wed Jan 21, 2009 4:27 amFollowed by: 80 members; Location: India; Thanked: 267 times; GMAT Score:760

Re: name it

by sanju09 » Thu Feb 26, 2009 2:23 am

marcusking wrote:
sanju09 wrote:Vertices of a quadrilateral ABCD are A(0, 0), B(4, 5), C(9, 9) and D(5, 4). What is the shape of the quadrilateral?

A. Square
B. Rectangle but not a square
C. Rhombus
D. Parallelogram but not a rhombus
E. Kite
I'm not sure if other users feel this way, but I find all of these posts a bit distracting. It seems like a lot of the questions you post aren't for your personal growth and don't seem like actual GMAT questions. I think it may benefit the board if we were to create a sticky post similar to what Sureshbala did for his 780+ aspirants questions and have you stick all of your questions in there. I appreciate the challenging questions you ask but I'm worried that some peoples post about questions that they genuinely struggle with may get lost in the mix.

Hope to not offend anyone, I just want to make the forum as useful as possible.

Dear links,

I am really thankful to all of you responsible visitors to the site for you have paid a sincere look over my work and boosted me with your esteemed advice. The GMAT CAT happens to have a very big pool of questions ranging from EASY to MODERATE to INTERMEDIATE to DIFFICULT to VERY DIFFICULT to 780+ to NO ONE KNOWS type of questions. One who is aiming higher, should have to have a good taste of all of these types of questions, importantly the questions from and over DIFFICULT level. No question in my previous posts has been taken from the Combined Admission Test materials. It is more important to attempt a new question than to know it's source. A sender is not everytime the author. I have tailored quite a few questions in my posts just as to convey another interesting and useful information to the aspirants, yes those were not genuine GMAT CAT questions, but weren't useless as well.
I post the OA along with my explanation, only when I feel it's my turn now. It's really bad habit, I agree

The mind is everything. What you think you become. -Lord Buddha

Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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