Hi,
I would like to have an answer to a rather simple DS question. My doubt essentially stems from the inconsistent answers to this question between two different GMAT tests:
DS: Is triangle ABC, with two sides of lengths 3 & 4 inches, a right-angled triangle?
(1) The length of the third side is 5 inches.
(2) Angle B = 90 degrees
Now, is the correct answer "D" or "B"? That is, would it be right in assuming that (1) implies a "classic" 3-4-5 right-triangle, which meets the Pythagorus theorem? Or, is it possible for a triangle to have sides in such a proportion without necessarily being a right-angled triangle? Of course, geometrically speaking, it seems impossible to draw such a triangle without its being a right-angled triangle.
I look forward to a conclusive answer. Thanks!
I would like to have an answer to a rather simple DS question. My doubt essentially stems from the inconsistent answers to this question between two different GMAT tests:
DS: Is triangle ABC, with two sides of lengths 3 & 4 inches, a right-angled triangle?
(1) The length of the third side is 5 inches.
(2) Angle B = 90 degrees
Now, is the correct answer "D" or "B"? That is, would it be right in assuming that (1) implies a "classic" 3-4-5 right-triangle, which meets the Pythagorus theorem? Or, is it possible for a triangle to have sides in such a proportion without necessarily being a right-angled triangle? Of course, geometrically speaking, it seems impossible to draw such a triangle without its being a right-angled triangle.
I look forward to a conclusive answer. Thanks!
