# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 3   b = 1.35   c = 2.26

Area: T = 1.4355050478
Perimeter: p = 6.61
Semiperimeter: s = 3.305

Angle ∠ A = α = 109.8299155367° = 109°49'45″ = 1.91768803758 rad
Angle ∠ B = β = 25.04442905067° = 25°2'39″ = 0.43771053282 rad
Angle ∠ C = γ = 45.1276554126° = 45°7'36″ = 0.78876069496 rad

Height: ha = 0.95767003187
Height: hb = 2.12660007081
Height: hc = 1.27699561752

Median: ma = 1.10222930645
Median: mb = 2.5698691301
Median: mc = 2.03333101092

Inradius: r = 0.43442058935
Circumradius: R = 1.5954543213

Vertex coordinates: A[2.26; 0] B[0; 0] C[2.71879424779; 1.27699561752]
Centroid: CG[1.65993141593; 0.42333187251]
Coordinates of the circumscribed circle: U[1.13; 1.12550191368]
Coordinates of the inscribed circle: I[1.955; 0.43442058935]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 70.17108446327° = 70°10'15″ = 1.91768803758 rad
∠ B' = β' = 154.9565709493° = 154°57'21″ = 0.43771053282 rad
∠ C' = γ' = 134.8733445874° = 134°52'24″ = 0.78876069496 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    