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anonymous

  • one year ago

Can someone please explain this to me. The four vertices of a rectangle drawn on a complex plane are defined by 1 + 4i, -2 + 4i, -2 – 3i, and 1 – 3i. What is the area?

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  1. anonymous
    • one year ago
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    The complex numbers you're given are essentially the coordinates (1, 4), (-2, 4), (-2, -3), and (1, -3) on a grid. So you'd have this: |dw:1434027220500:dw|

  2. anonymous
    • one year ago
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    From that you can get the area from width x height, which is 3 x 7 = 21. :)

  3. anonymous
    • one year ago
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    Thanks a ton

  4. anonymous
    • one year ago
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    No problem!

  5. anonymous
    • one year ago
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    so how'd you turn those numbers and i's into points?

  6. perl
    • one year ago
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    the imaginary number a + bi is represented in the 'complex plane' by the point (a,b) the x axis is the real axis, and the y axis is the imaginary axis

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