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KNicksfan4life Group Title

15. On the cube in the figure above, each of the following points is the same distance from P as it is from Q EXCEPT (A) A (B) B (C) C (D) D (E) E

  • one year ago
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  1. KNicksfan4life Group Title
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    look at question 15

    • one year ago
  2. Traxter Group Title
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    Here's a drawing of part of the diagram: |dw:1345993986749:dw| CQ and PQ are the same length because we are dealing with a cube, but since we don't know what the length is let's call it x. We want to see if the length of CP is also x, because if it isn't that would mean that it wasn't the same distance away from P as it is from Q. Let's call the length of CP y. Can you use Pythagoras' theorem to work out what y is in terms of x?

    • one year ago
  3. KNicksfan4life Group Title
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    I think u can yes

    • one year ago
  4. Traxter Group Title
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    Have a go, tell me what you get.

    • one year ago
  5. TheMind Group Title
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    answer is C

    • one year ago
  6. Traxter Group Title
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    It is indeed, can you explain why?

    • one year ago
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