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Which of the following lists the number of points at which a [#permalink]
 15 Jun 2008, 19:24
Which of the following lists the number of points at which a circle can intersect a triangle?
1) 2 and 6 only
2) 2,4 and 6 only
3) 1,2,3 and 6 only
4) 1,2,3,4 and 6 only
5) 1,2,3,4,5 and 6
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 19:47
E - I got into a tangle with this one as well. You have to consider a point of the circle touching a vertex of a triangle as an intersection point.
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 20:08
gmat blows wrote: Which of the following lists the number of points at which a circle can intersect a triangle?
1) 2 and 6 only
2) 2,4 and 6 only
3) 1,2,3 and 6 only
4) 1,2,3,4 and 6 only
5) 1,2,3,4,5 and 6 I did not understand this question clealrly. what is meant by "the number of points"? is there any diagram associated with this Q
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 20:16
I got B. Bsd thats not intersection, if circle touches the vortex of triangle thats touch not intersection.
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 20:19
marshpa I saw this on gmatprep2 . The OA is E - nuff said  .. I picked B originally.
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 22:52
Intersection of two lines, curves, etc is defined as when the x,y values of those two curves are equal. So a mere "touching" of two curves means they intersect
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 23:04
whoa ! I picked A so if an option is given 1,2,3,4,5,6,7,8,9,10.. it would the answer?
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 23:10
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prasannar wrote: whoa ! I picked A
so if an option is given 1,2,3,4,5,6,7,8,9,10.. it would the answer? nope 6 is the maximum
Attachments
intersect.jpg [ 3.8 KiB | Viewed 462 times ]
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Re: Triangle & Circle [#permalink]
15 Jun 2008, 23:22
buffdaddy = geometry god.
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Re: Triangle & Circle [#permalink]
16 Jun 2008, 01:29
buffdaddy - cheers for the smart pic ... that´s what i was looking for!
+1
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Re: Triangle & Circle [#permalink]
16 Jun 2008, 05:48
I hate it when a question is simple, like this one, but it's unclear what the authors actually mean! Do they want to test us on geometry or do they want to test whether we use the same words as the test authors? When I read intersect, I thought it meant pass through the line, not merely share and X or Y value. Once you think about it, it makes sense that touching can be intersecting, but that's certainly NOT what I thought at first. I know I would have gotten this question wrong.
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Re: Triangle & Circle [#permalink]
16 Jun 2008, 08:33
I cant agree more - I thought this was a trick question and chose B thinking I outsmarted GMAT...only to realize it still managed to make me feel like an idiot. I've never seen the word 'intersection' used in this way in geometry before - this definition makes somewhat more sense when applied to venn diagrams..but not to geometry, at least in my opinion Oh well - we live and we learn OA is E. thanks. jallenmorris wrote: I hate it when a question is simple, like this one, but it's unclear what the authors actually mean! Do they want to test us on geometry or do they want to test whether we use the same words as the test authors?
When I read intersect, I thought it meant pass through the line, not merely share and X or Y value.
Once you think about it, it makes sense that touching can be intersecting, but that's certainly NOT what I thought at first. I know I would have gotten this question wrong.
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Re: Triangle & Circle [#permalink]
16 Jun 2008, 11:55
hi all, this from wikipedia http://en.wikipedia.org/wiki/Line%E2%80 ... tersectionfocus on the diagram and the first sentence
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Re: Triangle & Circle
[#permalink]
16 Jun 2008, 11:55
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