# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 13.04   b = 44.12   c = 54

Area: T = 206.9098754425
Perimeter: p = 111.16
Semiperimeter: s = 55.58

Angle ∠ A = α = 10.00325445159° = 10°9″ = 0.17545773354 rad
Angle ∠ B = β = 35.99222204001° = 35°59'32″ = 0.62881827511 rad
Angle ∠ C = γ = 134.0055235084° = 134°19″ = 2.33988325671 rad

Height: ha = 31.73444715376
Height: hb = 9.37993633012
Height: hc = 7.66332872009

Median: ma = 48.87551143221
Median: mb = 32.50219568642
Median: mc = 18.14768454559

Inradius: r = 3.7232719583
Circumradius: R = 37.53877292352

Vertex coordinates: A[54; 0] B[0; 0] C[10.55106222222; 7.66332872009]
Centroid: CG[21.51768740741; 2.5544429067]
Coordinates of the circumscribed circle: U[27; -26.07883649053]
Coordinates of the inscribed circle: I[11.46; 3.7232719583]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 169.9977455484° = 169°59'51″ = 0.17545773354 rad
∠ B' = β' = 144.00877796° = 144°28″ = 0.62881827511 rad
∠ C' = γ' = 45.9954764916° = 45°59'41″ = 2.33988325671 rad

# How did we calculate this triangle?

### 1. The triangle circumference is the sum of the lengths of its three sides ### 2. Semiperimeter of the triangle ### 3. The triangle area using Heron's formula ### 4. Calculate the heights of the triangle from its area. ### 5. Calculation of the inner angles of the triangle using a Law of Cosines    