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GRE Geometry http://www.800score.com/forum/viewtopic.php?f=12&t=7084 
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Author:  questioner [ Tue Sep 25, 2012 4:14 pm ] 
Post subject:  GRE Geometry 
Which one of the following does not list the sides of a right triangle? A. 1, √3, 2 B. 2, 2, 2√2 C. √3, √4, √5 D. 3, 4, 5 E. 30, 40, 50 The correct answer is (C). Any triangle satisfying the Pythagorean Theorem will be a right triangle. The only one of these 5 choices that does NOT is √3, √4, √5. If we write (√3)² + (√4)² = (√5)², it becomes 3 + 4 = 5, which is NOT a true statement. The correct answer is C.  A is also a correct answer. 
Author:  Gennadiy [ Tue Sep 25, 2012 4:20 pm ] 
Post subject:  Re: GRE Geometry 
Quote: A is also a correct answer. 1, √3, 2 are the sides of a right triangle. Pythagorean Theorem works here:1² + (√3)² = 2² 1 + 3 = 4 4 = 4 
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