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## Problem with an answered question

This topic has 2 expert replies and 1 member reply
datonman Senior | Next Rank: 100 Posts
Joined
28 May 2014
Posted:
53 messages

#### Problem with an answered question

Sat Nov 15, 2014 5:45 pm
This is in regards to a previous answered question posted here. But apparently I didn't get any of the explanations given. I went over the explanation for the following problem:

A square with area 25 has one vertex on point (-2,1)in the coordinate plane. From the table below, select the x and y coordinates that could correspond to another vertex of the same square. There's an attachment for the following answers.

Someone posted an answer that and I quote him/her "when you draw a diagonal line on a graph, you can draw a right triangle with THAT diagonal line as its hypotenuse."

What does that mean exactly? That's where I got confused. What way would the line be made?
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### GMAT/MBA Expert

Rich.C@EMPOWERgmat.com Elite Legendary Member
Joined
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Posted:
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GMAT Score:
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Sat Nov 15, 2014 11:02 pm
Hi datonman,

The deductions here are based on a multi-step process:

1) Since the square has a side length of 5, we can draw a line segment with a length of 5 into the graph as a diagonal line.
2) The two sides of the right triangle that you can draw based on THAT diagonal MUST have side lengths of 3 and 4.
3) "-5" is "3 away" from -2 and "-3" is "4 away" from 1.

It certainly helps having those numbers in the answer choices though.

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

Thanked by: datonman
datonman Senior | Next Rank: 100 Posts
Joined
28 May 2014
Posted:
53 messages
Sat Nov 15, 2014 7:00 pm
Hello,

Thank you for getting me back to me on such short notice. I'm just a little confused. (Maybe it's because I've been studying for three hours and my brain is overworked.) But for 2.) I'm assuming that the -5, -3 was from the answer choices. Was this a quick choice using logic?

### GMAT/MBA Expert

Rich.C@EMPOWERgmat.com Elite Legendary Member
Joined
23 Jun 2013
Posted:
8955 messages
Followed by:
468 members
2867
GMAT Score:
800
Sat Nov 15, 2014 11:02 pm
Hi datonman,

The deductions here are based on a multi-step process:

1) Since the square has a side length of 5, we can draw a line segment with a length of 5 into the graph as a diagonal line.
2) The two sides of the right triangle that you can draw based on THAT diagonal MUST have side lengths of 3 and 4.
3) "-5" is "3 away" from -2 and "-3" is "4 away" from 1.

It certainly helps having those numbers in the answer choices though.

GMAT assassins aren't born, they're made,
Rich

_________________
Contact Rich at Rich.C@empowergmat.com

Thanked by: datonman

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