Triangle Input Parameters
Enter any 3 known values (sides or angles) to calculate all other properties.
units
units
units
°
°
°
Triangle Visualization
Calculation Results
Triangle Type:
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Area:
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Perimeter:
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Semi-perimeter:
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Height from A:
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Height from B:
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Height from C:
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Inradius:
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Circumradius:
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Angle Sum:
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Additional Tools
Calculation History
No calculations yet. Enter values and click Calculate.
How to Use the Triangle Calculator: A Comprehensive Guide
Getting Started
Our Triangle Calculator is designed to be intuitive and powerful. To begin, simply enter any three known values of your triangle - these can be side lengths or angle measurements. The calculator will automatically compute all other properties in real-time.
Input Methods
You can input values in several ways:
- SSS - Three side lengths
- SAS - Two sides and the included angle
- ASA - Two angles and the included side
- AAS - Two angles and a non-included side
Understanding Results
The calculator provides comprehensive results including:
- Triangle Type - Classification (scalene, isosceles, equilateral, right)
- Area & Perimeter - Fundamental measurements
- Heights - Altitudes from each vertex
- Radii - Inradius and circumradius
Advanced Features
Take advantage of our additional tools:
- Pythagorean Check - Verify if it's a right triangle
- Triangle Inequality - Confirm valid triangle dimensions
- Visualization - See your triangle with accurate proportions
Pro Tip
For best results, ensure your inputs satisfy the triangle inequality theorem (sum of any two sides must be greater than the third side) and that angle measurements sum to 180°. The calculator will alert you if these conditions aren't met.