Triangle Calculator

Calculate angles, sides, area, and perimeter

Enter all three side lengths

a =

b =

c =

Related Lessons

Pythagorean Theorem

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<iframe src="https://mathorio.com/en/embed/triangle-calculator" title="Triangle Calculator" width="100%" height="620" style="max-width:720px;border:1px solid #e5e7eb;border-radius:12px" loading="lazy"></iframe>
<p style="font-size:13px;margin:4px 0 0"><a href="https://mathorio.com/en/tools/triangle-calculator">Triangle Calculator</a> by <a href="https://mathorio.com/en">Mathorio</a></p>

Keep the link under the tool, it tells your students where the tool comes from.