Respuesta :

x=2 and y=1.... just this... you should put all four sides in equations...

As In the given quadrilateral all sides are equal and also all angles are also equal and that too 90°,

Therefore, It is a Square.

[tex]2y + 4 = 5y + 1 = 3x = 5x - 4[/tex]

Hope this will help you. 

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