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Query pl

This topic has 2 expert replies and 0 member replies
Nijo Senior | Next Rank: 100 Posts Default Avatar
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Query pl

Post Fri Aug 15, 2014 8:34 pm
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Which of the following lists number of points at which a circle can intersect a triangle?
    1) 2,6
    2) 2,4,6
    3) 1,2,3,6
    4) 1,2,3,4,6
    5) 1,2,3,4,5,6

    Will post OA later

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    Post Fri Aug 15, 2014 8:58 pm
    Quote:
    Which of the following lists the number of points at which a circle can intersect a triangle?

    (a) 2 and 6 only
    (b) 2, 4, and 6 only
    (c) 1, 2, 3, and 6 only
    (d) 1, 2, 3, 4, and 6 only
    (e) 1, 2, 3, 4, 5, and 6

    Answer: E

    The important takeaway here is that "intersect" does not necessarily mean "pass through"
    So, a line that is tangent to a circle (touching the circle but not passing through it) can be said to intersect the circle. To intersect is to share a common point.

    Cheers,
    Brent

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    Post Sat Aug 16, 2014 2:41 am
    Quote:
    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
    Notice how the answer choices DIFFER.
    Only E states that the circle and the triangle can intersect at 5 points.
    If it's possible for there to be 5 intersections, A, B, C and D can be eliminated.



    Since 5 intersections are possible, eliminate A, B, C and D.

    The correct answer is E.

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    Thanked by: Katy_
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