CK, Navlav8r,

You both assume that the double ticked segment (BE) is 2.5. This segment is half of BC which equals AB. Therefore, BE must equal half of AB. Your math does not check since 2.5 is greater than half of 4.33. Your assumption is wrong.

AB is the square root of twenty or 4.47. BE is half that at the square root of five or 2.23. Adding the square of the sides yields 25 which is the square of the hypotenuse (Pythagoras). The hypotenuse is thus calculated to be 5 which verifies.

Are you trolling me? crazy