Which triangles are congruent according to the sas criterion?

abc and lmn
lmn and fge
lmn, fge, and pqr
fge and pqr
abc, fge, and pqr

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.