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7 May, 03:18

On a coordinate plane, the coordinates of vertices R and T for a polygon are R (-6, 2) and T (5, 2). What is the length of Side RT of the polygon?

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  1. 7 May, 03:45
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    Use the formula

    D=sqrt[ (x2-X1) ^2 + (Y2-Y1) ^2]

    = sqrt (11^2+0^2) = 11.

    Sqrt means square root.
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