# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 49   b = 44   c = 12.87

Area: T = 273.0769804258
Perimeter: p = 105.87
Semiperimeter: s = 52.935

Angle ∠ A = α = 105.3276804936° = 105°19'36″ = 1.83882995367 rad
Angle ∠ B = β = 609.9996380594° = 59°59'59″ = 1.04771912341 rad
Angle ∠ C = γ = 14.67435570041° = 14°40'25″ = 0.25661018827 rad

Height: ha = 11.14657062962
Height: hb = 12.41222638299
Height: hc = 42.43550900168

Median: ma = 21.22765977019
Median: mb = 28.27222204646
Median: mc = 46.122039435

Inradius: r = 5.15985870267
Circumradius: R = 25.40435044953

Vertex coordinates: A[12.87; 0] B[0; 0] C[24.55002680653; 42.43550900168]
Centroid: CG[12.45767560218; 14.14550300056]
Coordinates of the circumscribed circle: U[6.435; 24.5754963187]
Coordinates of the inscribed circle: I[8.935; 5.15985870267]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 74.67331950635° = 74°40'24″ = 1.83882995367 rad
∠ B' = β' = 1200.000361941° = 120°1″ = 1.04771912341 rad
∠ C' = γ' = 165.3266442996° = 165°19'35″ = 0.25661018827 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    