[PAR] [TLE] Pythagorean theorem [SEP] In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle.  It states that the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.  The theorem can be written as an equation relating the lengths of the sides "a", "b" and "c", often called the "Pythagorean equation": [PAR] [TLE] Hypotenuse [SEP] In geometry, a hypotenuse (rarely: "hypothenuse") is the longest side of a right-angled triangle, the side opposite of the right angle.  The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the other two sides.
[PAR] [TLE] Pythagorean theorem [ SEP ] In mathematics , the Pythagorean theorem , also known as Pythagoras 's theorem , is a fundamental relation in Euclidean geometry among the three sides of a right triangle . It states that the square of the hypotenuse ( the side opposite the right angle ) is equal to the sum of the squares of the other two sides . The theorem can be written as an equation relating the lengths of the sides " a " , " b " and " c " , often called the " Pythagorean equation " : [PAR] [TLE] Hypotenuse [ SEP ] In geometry , a hypotenuse ( rarely : " hypothenuse " ) is the longest side of a right - angled triangle , the side opposite of the right angle . The length of the hypotenuse of a right triangle can be found using the Pythagorean theorem , which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the other two sides .
Which geometrical theorem is a fundamental relation in Euclidean geometry involving the longest side of a right-angled triangle?
Which geometrical theorem is a fundamental relation in Euclidean geometry involving the longest side of a right - angled triangle ?
Pythagorean theorem
Pythagorean theorem