Why do you think non-right triangles don't uphold the Pythagrean therom?

Answer 1

First of all, it is clear that a right angled triangle does conform to Pythagoras. So, take any rightangled triangle, and without changing the length of the small sides, slightly reduce the right-angle to something smaller. What was the hypotenuse is now smaller than it was, so its square is now smaller. But the sum of the squares of the other 2 sides hasn't changed. So the Pythagoras result does not work for this new situation.