Triangle calculator

Please enter what you know about the triangle:
You have entered side a, b and c.

Acute scalene triangle.

Sides: a = 26.83328   b = 33.94111   c = 36

Area: T = 4321.999572611
Perimeter: p = 96.77439
Semiperimeter: s = 48.387695

Angle ∠ A = α = 454.999986357° = 45° = 0.78553979253 rad
Angle ∠ B = β = 63.43549026306° = 63°26'6″ = 1.10771479116 rad
Angle ∠ C = γ = 71.56551110124° = 71°33'54″ = 1.24990468167 rad

Height: ha = 32.19993658963
Height: hb = 25.45658380613
Height: hc = 243.9999762562

Median: ma = 32.31109787169
Median: mb = 26.83328159278
Median: mc = 24.73986077321

Inradius: r = 8.92880182489
Circumradius: R = 18.97436593561

Vertex coordinates: A[36; 0] B[0; 0] C[122.0000123143; 243.9999762562]
Centroid: CG[166.0000041048; 87.9999920854]
Coordinates of the circumscribed circle: U[18; 65.9999791135]
Coordinates of the inscribed circle: I[14.446585; 8.92880182489]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1355.000013643° = 135° = 0.78553979253 rad
∠ B' = β' = 116.5655097369° = 116°33'54″ = 1.10771479116 rad
∠ C' = γ' = 108.4354888988° = 108°26'6″ = 1.24990468167 rad

How did we calculate this triangle?

1. Input data entered: side a, b and c. 2. The triangle circumference is the sum of the lengths of its three sides 3. Semiperimeter of the triangle 4. The triangle area using Heron's formula 5. Calculate the heights of the triangle from its area. 6. Calculation of the inner angles of the triangle using a Law of Cosines     