Answer :
You must add 5 and 7 which equals 12, then it will be any number greater than 12 to make the last side possible
In order for the triangle to be a right triangle, the sides must fill the equation a squared + b squared = c squared. So you would do 5 squared plus 7 squared = c squared, which means one possible side is the square root of 74, and then you have to do 5 squared + b squared = 7 squared and see what that is and then do 7 squared + b squared = 5 squared and see what that equals. Those are your three answers
