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It does not; if there is no 90 degree angle there is no hypotenuse.

Q: Does Pythagorean Theorem work for triangles that don't have a 90 degree angle?

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No. The Pythagorean theorem applies only to right triangles...those containing a right angle (90 degrees).

The Pythagorean Theorem is a statement about triangles containing a right angle. The Pythagorean Theorem states that:"The area of the square built upon the hypotenuse of a right triangle is equal to the sum of the areas of the squares upon the remaining sides."

c2 = a2 + b2 Where "a" and "b" are the lengths of the sides of a triangle that meet to form a right angle (90 degree angle) and "c" is the third side, the hypotenuse

The hypotenuse angle theorem, also known as the HA theorem, states that 'if the hypotenuse and an acute angle of one right triangle are congruent to the hypotenuse and an acute angle of another right triangle, then the two triangles are congruent.'

With A=5 B=2 C=7, you don't have a right-angled triangle (90° angle), that's why you get a wrong answer. The Pythagorean theorem isn't wrong, YOU are wrong!

Related questions

Right triangles - those with a 90-degree angle.

Right-Angle triangles

Right angle triangles

With right angle triangles

All right angle triangles

No it can only be used with right angle triangles.

Yes Pythagoras' theorem is applicable to right angle triangles

No. The Pythagorean theorem applies only to right triangles...those containing a right angle (90 degrees).

Because they both involve right angle triangles

it showed us how to determine the hypotenuse of right angle triangles

The Pythagorean Theorem is a statement about triangles containing a right angle. The Pythagorean Theorem states that:"The area of the square built upon the hypotenuse of a right triangle is equal to the sum of the areas of the squares upon the remaining sides."

No, the pythagorean theorem only works on right triangles, but it will work on any right triangle. This is because the Pythagorean Theorem states that length of Leg A squared plus the length of Leg B Squared equals the length of the hypotenuse squared. A hypotenuse is always found opposite a right angle. Only right triangles have right angles; therefore, the Pythagorean Theorem only applies to right triangles. :D