No, the Pythagorean Theorem only works on right triangles.
You could use the law of cosines, though:
c^2=a^2+b^2-2ab*cos(C)
Where C is the measure of the angle between sides a and b.
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A Mathematician named Pythagorean. That is why it is called Pythagorean's theorem. For every right triangle, this theorem will be true.
Simply because the Pythagorean Theorem is not true for any triangle that doesn't have a right angle in it. If a triangle has a right angle in it, then it satisfies the Theorem. If it hasn't, then it doesn't. And if it satisfies the Theorem, then it has a right angle in it, and if it doesn't, then it hasn't.
The hypotenuse is the longest side in a right triangle and it is opposite the right angle. It is always opposite the right angle and is found by using the Pythagorean theorem.
Do you mean THEOREM? In math a theorem is a statement which is proved true by applying a chain of logic. A famous one is the Pythagorean Theorem: The sum of squares of the legs of a right triangle equals the square of the hypotenuse. A^2 + B^2 = C^2
Yes it is a way of checking a true right angle.