# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 15.23   b = 7.62   c = 17.03

Area: T = 58.0266299993
Perimeter: p = 39.88
Semiperimeter: s = 19.94

Angle ∠ A = α = 63.41991919155° = 63°25'9″ = 1.10768737079 rad
Angle ∠ B = β = 26.5879919415° = 26°34'48″ = 0.46439071087 rad
Angle ∠ C = γ = 90.00108886695° = 90°3″ = 1.5710811837 rad

Height: ha = 7.62199999991
Height: hb = 15.23299999982
Height: hc = 6.81545977678

Median: ma = 10.77328559352
Median: mb = 15.69993885231
Median: mc = 8.51548943035

Inradius: r = 2.91100451351
Circumradius: R = 8.5155000001

Vertex coordinates: A[17.03; 0] B[0; 0] C[13.62203581914; 6.81545977678]
Centroid: CG[10.21767860638; 2.27215325893]
Coordinates of the circumscribed circle: U[8.515; -00.0001320694]
Coordinates of the inscribed circle: I[12.32; 2.91100451351]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.5810808085° = 116°34'51″ = 1.10768737079 rad
∠ B' = β' = 153.4220080585° = 153°25'12″ = 0.46439071087 rad
∠ C' = γ' = 89.99991113305° = 89°59'57″ = 1.5710811837 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   