# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 11   b = 16   c = 22

Area: T = 83.8365776969
Perimeter: p = 49
Semiperimeter: s = 24.5

Angle ∠ A = α = 28.44766098654° = 28°26'48″ = 0.49664870032 rad
Angle ∠ B = β = 43.85767453647° = 43°51'24″ = 0.76554446058 rad
Angle ∠ C = γ = 107.697664477° = 107°41'48″ = 1.88796610446 rad

Height: ha = 15.24328685398
Height: hb = 10.47994721211
Height: hc = 7.62114342699

Median: ma = 18.43223085912
Median: mb = 15.44334452115
Median: mc = 8.21658383626

Inradius: r = 3.42218684477
Circumradius: R = 11.54663831194

Vertex coordinates: A[22; 0] B[0; 0] C[7.93218181818; 7.62114342699]
Centroid: CG[9.97772727273; 2.544047809]
Coordinates of the circumscribed circle: U[11; -3.51098380505]
Coordinates of the inscribed circle: I[8.5; 3.42218684477]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 151.5533390135° = 151°33'12″ = 0.49664870032 rad
∠ B' = β' = 136.1433254635° = 136°8'36″ = 0.76554446058 rad
∠ C' = γ' = 72.30333552301° = 72°18'12″ = 1.88796610446 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    