Malcolm wants to prove the converse of the Pythagorean Theorem. He takes the following steps.

Question

He draws a triangle with side lengths a,b, and c, such that a^2+b^2=c^2 .
Then, he draws a second triangle with sides lengths a,b and d such that sides a and b form a 90-degree angle.
Finally, he uses the Pythagorean Theorem to find the length of d, the third side of the second triangle. He finds that d=c

What can Malcolm conclude from these steps?
A.
The two triangles are congruent, so the sides with lengths a and b in the first triangle must form a 90-degree angle.

B.
The two triangles are congruent, so the sides with lengths a and b in the first triangle must not form a 90-degree angle.

C.
The two triangles are not congruent, so the sides with lengths a and b in the first triangle must form a 90-degree angle.

D.
The two triangles are not congruent, so the sides with lengths a and b in the first triangle must not form a 90-degree angle.

Answer 1

B. The two triangles are congruent, so the sides with lengths a and b in the first triangle must not form a 90-degree angle.