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KNicksfan4life

  • 2 years ago

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

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  1. KNicksfan4life
    • 2 years ago
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    look at question 15

  2. Traxter
    • 2 years ago
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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?

  3. KNicksfan4life
    • 2 years ago
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    I think u can yes

  4. Traxter
    • 2 years ago
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    Have a go, tell me what you get.

  5. TheMind
    • 2 years ago
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    answer is C

  6. Traxter
    • 2 years ago
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    It is indeed, can you explain why?

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