Question 1068361
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The opposite sides of your quadrilateral have equal lengths.


You can see it looking into the proportion.


    A quadrilateral which has the opposite sides congruent is WHAT ? - 


   - Correct, it is PARALLELOGRAM.



The diagonals of your parallelogram have equal lengths.


You can see it looking into the proportion for the diagonals.


    A parallelogram which has congruent diagonals is WHAT ?


    - Correct, it is rectangluar.



Hence, your quadrilateral is WHAT ?


    - Correct, it is  __________________ .