Triangle Calculator - Solve Any Triangle

Your details

The side opposite angle A. Enter 0 or leave blank if unknown.
The side opposite angle B.
The side opposite angle C. Enter 0 or leave blank if unknown.
The angle at vertex A, opposite side a.
deg
The angle at vertex B, opposite side b.
deg
The angle at vertex C, opposite side c.
deg
Side aAcute Scalene Triangle
7

Length of side a

Side b10
Side c8.8882
Angle A43.0039deg
Angle B76.9961deg
Angle C60deg
Area30.3109
Perimeter25.8882
Semi-perimeter12.9441
Inradius (r)2.3417
Circumradius (R)5.1316
Altitude ha8.6603
Altitude hb6.0622
Altitude hc6.8205
Median ma8.7892
Median mb6.245
Median mc7.3993
Triangle typeAcute Scalene

This is a Acute Scalene triangle with area 30.3109 square units.

  • Angles sum to 180.00 degrees (should be exactly 180).
  • Inradius 2.3417 and circumradius 5.1316: Euler's inequality states R is at least twice r (R/r = 2.191).
  • The longest side (b = 10.0000) is opposite the largest angle (77.00 deg), as the law of sines requires.

Next stepUse the step-by-step panel below to see exactly how each value was derived from your inputs.

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