If `A(2,0),B(0,2)a n dC(0,7)` are three vertices, taken in order, of an isosceles trapezium `A B C D` in which `A B||D Cdot` find the coordinates of `Ddot`

Explanation

We had to form two equations and then solve them to get the required value of `x` and `y`.




We will first equation by comparing the slope of parallel lines where formula of slope is `m=frac{y_{2}-y_{1}}{x_{2}-x_{1}}`. And another equation by comparing the length of equal sides.




Complete step-by-step answer:


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