Posted by Anonymous on Thursday, November 29, 2012 at 10:25am.
a triangle has sides of lengths 12, 14, and 19 is it a Right Triangle? Explain

Geometry  Steve, Thursday, November 29, 2012 at 10:46am
it is a right triangle only if
19^2 = 12^2 + 14^2
since
12^2 ends in 4
14^2 ends in 6
19^2 ends in 1
it is not possible. 
Geometry  Annie, Tuesday, November 12, 2013 at 5:37pm
it is not a right triangle. the easiest way i determine is if they are factors of 3,4 and 5