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the figure below shows two triangles efg and klm:

two triangles efg and klm are drawn. angle kml is a right angle. the measures of the sides of the triangles are, in triangle ef

which of the following can be used to prove that triangle efg is also a right triangle?

a. use pythagorean theorem to prove that kl is equal to c.

b. prove that the ratio of ef and kl is greater than 1 and hence, the triangles are similar by aa postulate.

c. prove that the sum of the squares of a and c is greater than square of b.

d. prove that the sum of the squares of a and b is greater than square of c.