# Pythagorean Theorem Calculator

> Provide any two sides of a right triangle to solve the third side, area, perimeter, and squared terms.

Page: https://askcalculators.com/calculator/pythagorean-theorem-calculator/
Definition: https://askcalculators.com/calculator/pythagorean-theorem-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/pythagorean-theorem-calculator/schema.json
Version: 2.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/pythagorean-theorem-calculator/?mode=hypotenuse&sideA=3&sideB=4

## Inputs
- mode: Known sides; type=select; required; default=hypotenuse; values=hypotenuse|leg|leg-a
- sideA: First known side; type=number; required; default=3; min=0.000001
- sideB: Second known side; type=number; required; default=4; min=0.000001

## Outputs
- missingSide: Missing side; format=number; primary
- sideAResult: Side a; format=number
- sideBResult: Side b; format=number
- hypotenuse: Side c; format=number
- aSquared: a²; format=number
- bSquared: b²; format=number
- cSquared: c²; format=number
- area: Area; format=number
- perimeter: Perimeter; format=number

## Formula
a²+b²=c²; c=√(a²+b²), a=√(c²−b²), or b=√(c²−a²).

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.