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# Can someone help me with this one.. ?

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Senior Manager
Joined: 25 Jun 2009
Posts: 298

Kudos [?]: 150 [0], given: 6

Can someone help me with this one.. ? [#permalink]

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28 Jul 2009, 01:17
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untitled.JPG [ 10.04 KiB | Viewed 848 times ]

Kudos [?]: 150 [0], given: 6

Current Student
Affiliations: ?
Joined: 20 Jul 2009
Posts: 191

Kudos [?]: 39 [0], given: 6

Location: Africa/Europe
Schools: Kellogg; Ross (\$\$); Tuck
Re: Can someone help me with this one.. ? [#permalink]

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28 Jul 2009, 03:14
IMO C

1) and 2) are insufficient alone.
Both we have r° = s° ==> the triangle is an equilateral one.
Attachment:

triangle.GIF [ 4.28 KiB | Viewed 845 times ]

no need to argue....

Kudos [?]: 39 [0], given: 6

Senior Manager
Joined: 25 Jun 2009
Posts: 298

Kudos [?]: 150 [0], given: 6

Re: Can someone help me with this one.. ? [#permalink]

### Show Tags

28 Jul 2009, 03:32
IMO C

1) and 2) are insufficient alone.
Both we have r° = s° ==> the triangle is an equilateral one.
Attachment:
triangle.GIF

no need to argue....

When r=s; can you explain how this triangle becomes an equilateral one ?

Kudos [?]: 150 [0], given: 6

Current Student
Affiliations: ?
Joined: 20 Jul 2009
Posts: 191

Kudos [?]: 39 [0], given: 6

Location: Africa/Europe
Schools: Kellogg; Ross (\$\$); Tuck
Re: Can someone help me with this one.. ? [#permalink]

### Show Tags

28 Jul 2009, 03:36
in the figure, I can see s°, s° and r° as the angles of the triangle.
if s°=r° we have all three angle of the triangle that rare equals. so s=r=180/3=60.

an equilateral triangle is one that has 60° for each angle.

Kudos [?]: 39 [0], given: 6

Senior Manager
Joined: 25 Jun 2009
Posts: 298

Kudos [?]: 150 [0], given: 6

Re: Can someone help me with this one.. ? [#permalink]

### Show Tags

28 Jul 2009, 03:43
in the figure, I can see s°, s° and r° as the angles of the triangle.
if s°=r° we have all three angle of the triangle that rare equals. so s=r=180/3=60.

an equilateral triangle is one that has 60° for each angle.

My bad , I misread r as y and was confused all this while. Thanks !

Kudos [?]: 150 [0], given: 6

Re: Can someone help me with this one.. ?   [#permalink] 28 Jul 2009, 03:43
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