Type DetectionAll Angles100% Private

Enter the three sides of a triangle

Scalene

Area

14.6969

Perimeter

18.0000

Angle A

44.42 deg

Angle B

57.12 deg

Angle C

78.46 deg

Inradius

1.6330

Circumradius

3.5722

FAQ

How is the area calculated?
The tool uses Heron's formula: Area = sqrt(s(s-a)(s-b)(s-c)), where s is the semi-perimeter (a+b+c)/2.
What triangle types are detected?
Equilateral (all sides equal), Isosceles (two sides equal), Scalene (all different), Right (one 90-degree angle), and Right Isosceles.
How are angles calculated?
Angles are calculated using the Law of Cosines. For example, angle A = arccos((b^2 + c^2 - a^2) / (2bc)).
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About Triangle Calc

What this tool does

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Pro tip

For loan and mortgage calculations, small changes in interest rate matter more than you think. Try adjusting the rate by 0.25% to see how it affects total interest paid over the life of the loan.

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