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# Which of the following lists the number of points at which a

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Which of the following lists the number of points at which a [#permalink]  08 Nov 2008, 04:36
Which of the following lists the number of points at which a circle can intersect a triangle?

2, 6
2,4, 6
1,2,3,6
1,2,3,4,6
1,2,3,4,5,6
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Re: Circle [#permalink]  08 Nov 2008, 05:21
what are these lists of numbers?
points in rectangular coordinate?
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Re: Circle [#permalink]  08 Nov 2008, 06:38
A circle can intersect a triangle at a max of 6 points.

Refer to the picture.

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Re: Circle [#permalink]  08 Nov 2008, 10:09
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Re: Circle [#permalink]  08 Nov 2008, 11:53
I candy thanks for the link. I did go through it. It doesn't provide the best solution, as tangent is not the same as intersect? And hence wanted some more thoughts on the problem. Any idea?
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Re: Circle [#permalink]  08 Nov 2008, 12:01
from wikipedia : A tangent line t to a circle C intersects the circle at a single point T.

I considered tangent as a line that does not intersect, but apparently I was wrong and hence my solution was wrong.
Re: Circle   [#permalink] 08 Nov 2008, 12:01
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# Which of the following lists the number of points at which a

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