The figure below shows two triangles efg and klm.
which step can be used to prove that triangle efg is also a right triangle?
answer

prove that a + b is greater than c in triangle efg so c2 = a2 + b2.

prove that kl = ef so in triangle klm c2 = a2 + b2 which makes triangle efg a right triangle.

prove that the sum of the squares of a and c in triangle efg is greater than square of b in triangle klm.

prove that the sum of the squares of a and b in triangle klm is greater than square of c in triangle efg.

Option 2nd is correct.

Step-by-step explanation:

In right angle triangle:

Pythagoras theorem follows which is:

Here, c= hypotenuse b is one side and a is the other side.

Therefore, according to Pythagoras theorem Option 1,3 and 4 are discarded.

Option 2nd is correct because KL=EF and triangle KLM and EFG follows Pythagoras theorem which makes them a right angle triangle.

i hope this is what you were looking for.

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