2. It is to be established by the RHS congruence rule that . What additional information is needed, if it is given that
and
To prove congruency by the RHS (right angle, hypotenuse, side) rule, we need the hypotenuse and side equal to the corresponding hypotenuse and side of a different angle.
So Given
( Right angle )
( Side )
So the third piece of information we need is the equality of the hypotenuses of both triangles. i.e.
Hence, if this information is given, then we can say,
.