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Choose Unknown Side
Select whether you want to calculate side A, side B or the hypotenuse.

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Find any missing side of a right triangle using the Pythagorean theorem and view its angles, area and perimeter.
Enter any two sides of a right triangle to find the missing side.
Pythagorean Theorem
a² + b² = c²
a
Leg
b
Leg
c
Hypotenuse
Select whether you want to calculate side A, side B or the hypotenuse.
Enter the two known side lengths of the right triangle.
See the missing side, angles, area, perimeter and calculation.