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? asked in Science & MathematicsMathematics · 2 months ago

If I am given a set of coordinates how do I determine if the figure is a parallelogram and prove using the slope formula for each segment?

Coordinates: A(-3,4), B(4,5), C(5,-1), D(-2,-2). 

Slope of AB=

Slope of BC=

Slope of CD=

Slope AD=

Is ABCD a parallelogram?

2 Answers

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  • 2 months ago
    Favorite Answer

     Coordinates: A(-3, 4), B(4, 5), C(5, -1), D(-2, -2).

     Slope of AB = 1/7

     Slope of BC = -6

     Slope of CD = 1/7

    Slope AD = -6

     ABCD is a parallelogram.

  • 2 months ago

    The slopes are 1/7, -6, 1/7, and -6.

    So there are two pairs of parallel sides.  It's a parallelogram.

    You can make yourself feel better about it by drawing a picture of it, too.

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