Pythagorean Theorem Calculator with Steps

Please select the side you wants to calculate and enter the value of other two sides.

Select side Select Hypotenuse side (c) Adjacent side (a) Opposite side (b)

 

Adjacent side (a):
Opposite side (b):
Hypotenuse side (c):

 

Pythagoras Theorem Formula

In a right angled triangle: the square of the hypotenuse is equal to the sum of the squares of the other two sides.
Suppose right triangle with sides a and b and hypotenuse c then

c² = a² + b²

Or c = √(a² + b²)   Or a = √(c² - b²)    Or b = √(c² + a²)

Definition & Examples :

The Pythagorean Theorem is a fundamental rule in geometry that describes the relationship between the three sides of a right-angled triangle. It states that the square of the longest side (the hypotenuse) is exactly equal to the sum of the squares of the other two sides.

The formula for hypotenuse 
c =  √(a2 + b2)