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Q: Triangle sum theorem

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The sum of the interior angles of a triangle in euclidean geometry equal 180 degrees

A triangle is a right triangle if the sum of the squares of the two legs is equal to the square of the hypotenuse.

It is Pythagoras' theorem that states for any right angle triangle its hypotenuse when square is equal to the sum of its squared sides.

The Pythagorean theorem

It is Pythagoras' theorem

Related questions

The theorem that states every triangle's angles add up to 180 degrees

complementary

The sum of the interior angles of a triangle in euclidean geometry equal 180 degrees

The triangle inequality theorem states that any side of a triangle is always shorter than the sum of the other two sides.

triangle sum theorem

Pythagoras' theorem is only applicable to a right angle triangle in that the square of its hypotenuse is equal to the sum of its two squared sides.

The ASA theorem and the fact that the three angles of any triangle sum to 2*pi radians (180 degrees).

A triangle is a right triangle if the sum of the squares of the two legs is equal to the square of the hypotenuse.

It is Pythagoras' theorem that states for any right angle triangle the square of its hypotenuse is equal to the sum of its squared sides.

It is Pythagoras' theorem that states for any right angle triangle its hypotenuse when square is equal to the sum of its squared sides.

The converse of Pythagoras's theorem states :- "If the square of one side of a triangle is equal to the sum of square of other two sides then the triangle is a right angled triangle""

It is Euclid's fifth or parallel postulate.

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