# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 16.76   b = 7.62   c = 19.1

Area: T = 63.5287790827
Perimeter: p = 43.48
Semiperimeter: s = 21.74

Angle ∠ A = α = 60.80770668682° = 60°48'25″ = 1.06112835253 rad
Angle ∠ B = β = 23.38548255422° = 23°23'5″ = 0.40881422007 rad
Angle ∠ C = γ = 95.80881075896° = 95°48'29″ = 1.67221669275 rad

Height: ha = 7.58108819603
Height: hb = 16.6743960847
Height: hc = 6.65221246939

Median: ma = 11.88332992052
Median: mb = 17.56595472607
Median: mc = 8.84875137751

Inradius: r = 2.92221614916
Circumradius: R = 9.59992788677

Vertex coordinates: A[19.1; 0] B[0; 0] C[15.38333298429; 6.65221246939]
Centroid: CG[11.4944443281; 2.2177374898]
Coordinates of the circumscribed circle: U[9.55; -0.97114189522]
Coordinates of the inscribed circle: I[14.12; 2.92221614916]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 119.1932933132° = 119°11'35″ = 1.06112835253 rad
∠ B' = β' = 156.6155174458° = 156°36'55″ = 0.40881422007 rad
∠ C' = γ' = 84.19218924104° = 84°11'31″ = 1.67221669275 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    