# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 242.2   b = 186.2   c = 76.89

Area: T = 5551.298840902
Perimeter: p = 505.29
Semiperimeter: s = 252.645

Angle ∠ A = α = 129.1510710858° = 129°9'3″ = 2.25441051358 rad
Angle ∠ B = β = 36.59771076409° = 36°35'50″ = 0.6398740025 rad
Angle ∠ C = γ = 14.25221815014° = 14°15'8″ = 0.24987474928 rad

Height: ha = 45.84106144427
Height: hb = 59.6277265403
Height: hc = 144.3965848849

Median: ma = 75.00769733425
Median: mb = 153.6844241385
Median: mc = 212.5743803595

Inradius: r = 21.97327222348
Circumradius: R = 156.1659752373

Vertex coordinates: A[76.89; 0] B[0; 0] C[194.4549682013; 144.3965848849]
Centroid: CG[90.44765606711; 48.13219496165]
Coordinates of the circumscribed circle: U[38.445; 151.3533395192]
Coordinates of the inscribed circle: I[66.445; 21.97327222348]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 50.84992891423° = 50°50'57″ = 2.25441051358 rad
∠ B' = β' = 143.4032892359° = 143°24'10″ = 0.6398740025 rad
∠ C' = γ' = 165.7487818499° = 165°44'52″ = 0.24987474928 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    