# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 220   b = 510   c = 614.69

Area: T = 53354.23994886
Perimeter: p = 1344.69
Semiperimeter: s = 672.345

Angle ∠ A = α = 19.99004367677° = 19°54'2″ = 0.34773281442 rad
Angle ∠ B = β = 52.09994605263° = 52°5'58″ = 0.90993071247 rad
Angle ∠ C = γ = 1088.000102706° = 108° = 1.88549573847 rad

Height: ha = 485.0398540805
Height: hb = 209.232231172
Height: hc = 173.5977226207

Median: ma = 553.9660195366
Median: mb = 384.8343597871
Median: mc = 244.5187997242

Inradius: r = 79.35554491943
Circumradius: R = 323.162184553

Vertex coordinates: A[614.69; 0] B[0; 0] C[135.1444378548; 173.5977226207]
Centroid: CG[249.945479285; 57.8665742069]
Coordinates of the circumscribed circle: U[307.345; -99.86330531362]
Coordinates of the inscribed circle: I[162.345; 79.35554491943]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 160.1099563232° = 160°5'58″ = 0.34773281442 rad
∠ B' = β' = 127.9010539474° = 127°54'2″ = 0.90993071247 rad
∠ C' = γ' = 721.999897294° = 72° = 1.88549573847 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    