Triangle calculator

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

Obtuse scalene triangle.

Sides: a = 93.5   b = 121.3   c = 207.8220394

Area: T = 2796.392154589
Perimeter: p = 422.6220394
Semiperimeter: s = 211.3110197

Angle ∠ A = α = 12.81883033513° = 12°49'6″ = 0.2243721598 rad
Angle ∠ B = β = 16.72877742945° = 16°43'40″ = 0.2921954738 rad
Angle ∠ C = γ = 150.4543922354° = 150°27'14″ = 2.62659163176 rad

Height: ha = 59.81658619441
Height: hb = 46.10770329083
Height: hc = 26.91216181724

Median: ma = 163.6032996859
Median: mb = 149.2989519328
Median: mc = 30.50664084976

Inradius: r = 13.23435854378
Circumradius: R = 210.7188469758

Vertex coordinates: A[207.8220394; 0] B[0; 0] C[89.54333683046; 26.91216181724]
Centroid: CG[99.12112541015; 8.97105393908]
Coordinates of the circumscribed circle: U[103.9110197; -183.3176514413]
Coordinates of the inscribed circle: I[90.0110197; 13.23435854378]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 167.1821696649° = 167°10'54″ = 0.2243721598 rad
∠ B' = β' = 163.2722225705° = 163°16'20″ = 0.2921954738 rad
∠ C' = γ' = 29.54660776458° = 29°32'46″ = 2.62659163176 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     