1 and 2 are the same and neither is a triangle let alone a right triangle. 5+10 = 15 The two smaller sides will not form an apex: the 3rd side is too large.
3 does not have a 3rd side listed but the only way to get a right triangle is if the third side is sqrt(2)
4 Yes
8^2 + 15^2 = 17^2
64 + 225 = 289
64 + 225 does equal 289 which is 17^2
5 Yes
14^2 = 196
48^2 = 2304
Sum = 2500
50^2 = 2500
So this triangle does obey the Pythagorean Theorem
