9.5

a2+b2=c2 ..... A and B can be switched, but has to be part of the right triangle. Pythagorean theorem only right a__n__gles.__Its says that the two side of right angel squared then added = the lenght of the other angel.__ A and B legs are part of right triangle. C is hypotenuse. 3+4=5 3*3=9 4*4=16 5*5=25 9+=25