# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 14.32   b = 7.07   c = 18.03

Area: T = 47.49769664177
Perimeter: p = 39.42
Semiperimeter: s = 19.71

Angle ∠ A = α = 48.17774422892° = 48°10'39″ = 0.84108549931 rad
Angle ∠ B = β = 21.5887589914° = 21°35'15″ = 0.37767745216 rad
Angle ∠ C = γ = 110.2354967797° = 110°14'6″ = 1.92439631389 rad

Height: ha = 6.63436545276
Height: hb = 13.43661998353
Height: hc = 5.26986596137

Median: ma = 11.6733358557
Median: mb = 15.89326217158
Median: mc = 6.80109870607

Inradius: r = 2.41097902799
Circumradius: R = 9.60879845182

Vertex coordinates: A[18.03; 0] B[0; 0] C[13.31655407654; 5.26986596137]
Centroid: CG[10.44985135885; 1.75662198712]
Coordinates of the circumscribed circle: U[9.015; -3.32331222519]
Coordinates of the inscribed circle: I[12.64; 2.41097902799]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 131.8232557711° = 131°49'21″ = 0.84108549931 rad
∠ B' = β' = 158.4122410086° = 158°24'45″ = 0.37767745216 rad
∠ C' = γ' = 69.76550322032° = 69°45'54″ = 1.92439631389 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    