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Pythagoras Theorem Explained

Pythagoras theorem states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides. It is one of the most im

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TL;DR: Pythagoras theorem states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides. It is one of the mo…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 23, 2026

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Pythagoras Theorem: Pythagoras theorem states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides. It is one of the most im

Pythagoras Theorem Explained Simply

Pythagoras theorem states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides. It is one of the most im This is a key Mathematics concept for Class 8-9.

Frequently Asked Questions

Who was Pythagoras and why is the theorem named after him?

Pythagoras was an ancient Greek mathematician and philosopher who lived around 570 to 495 BCE. Although the relationship was known before him, he is credited with proving the theorem and understanding its significance. The theorem is named in his honor.

Does the theorem work for all triangles?

No, Pythagoras theorem only works for right triangles that have exactly one 90-degree angle. For other triangles, there are different relationships called the Law of Cosines.

Why is 3-4-5 the most famous Pythagorean triple?

The 3-4-5 triple is the smallest Pythagorean triple with the simplest numbers. It is easy to remember and use. Construction workers especially use it because it is easy to measure in the field.

Related Mathematics Concepts

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