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March 28, 2017

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the bases of a trapezoid are 10 and 12 and the nonparallel sides are 2 and 3. How far must each of the nonparallel sides be extended to form a triangle?

  • geometry - correct? - ,

    I don't think the figure described is a trapezoid.

    Consider the figure as set up with the lower base drawn from (0,0) to (12,0)

    Let the upper base go from (a,b) to (a+10,b)

    Then we have two triangles at the sides such that

    a^2 + b^2 = 4
    a^2 + (2-a)^2 = 9

    This gives a = -1/4, which means that both slanting sides lean to the left.

    Have I missed something here?

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