Right Triangles

Theorem:
If one leg and the hypotenuse of a right triangle is congruent with
the hypotenuse and one leg of another right triangle then the right
triangles are congruent.

In right triangles, the side opposite the right angle is called the hypotenuse, and the other sides are called the legs.
 

Theorem:
The midpoint of the hypotenuse of a right triangle is equidistant from
the three vertices.