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brittanyburton

  • 3 years ago

Is a shape with the vertices (2, 2), (5, -5), (1, -7), and (-2, 0) best classified as a parallelogram, rectangle, or neither? A. Parallelogram B. Rectangle C. Neither

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  1. rizwan_uet
    • 3 years ago
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    plot the points on graph paper you will know what is it

  2. manishsatywali
    • 3 years ago
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    for algebraic analysis find the slope of each of the 4 lines

  3. brittanyburton
    • 3 years ago
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    I'm on a computer...not with paper. Ya know... I have 4 questions left, so I'd love the answer~

  4. manishsatywali
    • 3 years ago
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    ans. is c

  5. mathstudent55
    • 3 years ago
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    Here's computer "graph paper." Now try plotting the points. |dw:1358753411282:dw|

  6. mathstudent55
    • 3 years ago
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    |dw:1358753528544:dw|

  7. brittanyburton
    • 3 years ago
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    so then what's the answer? @mathstudent55

  8. mathstudent55
    • 3 years ago
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    Notice that two opposite sides have a rise and run of 4 and 2. The other two opposite sides have a rise and run of -7 and 3. Therefore both pairs of opposite sides are congruent. It's at least a parallelogram. Is it also a rectangle? Are slopes 2/4 and -7/3 negative reciprocals? Simplify them and multiply them together. If their product is -1, they are and it's a rectangle, if not, it's not a rectangle. 2/4 = 1/2 1/2 * (-7)/3 = -7/6 which is not -1, so it's not a rectangle, but it is a parallelogram.

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