What is the hypotenuse-leg theorem? a. if the hypotenuse of a right triangle is congruent to the corresponding part of another right triangle, then the triangles are congruent. b. if the hypotenuse and one leg of a right triangle are congruent to the corresponding parts of another right triangle, then the triangles are congruent. c. if the hypotenuse and one leg of a right triangle are similar to the corresponding parts of another right triangle, then the triangles are congruent.