Verified Answer :

so I think it's a rectangle. and AB is the diagnal line. to find AB, we need to use the hypothegorin teorin.

BD=5, DA=5

let x represent the AB

formula= a²+b²=c²

= 5²+5²= x²

= 25+25=x²

=50=x²

=square root of 50= 7.07

AB is 7.07

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