Triangle Inequality Theorem Calculator — Free Online Tool
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Triangle Inequality Theorem Calculator

Check if three side lengths can form a valid triangle

Theorem: The sum of the lengths of any two sides of a triangle must be greater than the length of the third side ($a + b > c$, $a + c > b$, and $b + c > a$). Enter side lengths below.
Side Lengths Input

Calculation Results

⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.

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