# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 7.6   b = 6.7   c = 3.57

Area: T = 11.95994591067
Perimeter: p = 17.87
Semiperimeter: s = 8.935

Angle ∠ A = α = 90.15498329819° = 90°8'59″ = 1.57334114057 rad
Angle ∠ B = β = 61.83330555179° = 61°49'59″ = 1.07991904054 rad
Angle ∠ C = γ = 28.01771115002° = 28°1'2″ = 0.48989908426 rad

Height: ha = 3.14772260807
Height: hb = 3.5769987793
Height: hc = 6.76999770906

Median: ma = 3.79217608047
Median: mb = 4.90220352916
Median: mc = 6.93882112248

Inradius: r = 1.3388495703
Circumradius: R = 3.88000129934

Vertex coordinates: A[3.57; 0] B[0; 0] C[3.58875210084; 6.76999770906]
Centroid: CG[2.38658403361; 2.23333256969]
Coordinates of the circumscribed circle: U[1.785; 3.35546793812]
Coordinates of the inscribed circle: I[2.235; 1.3388495703]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 89.85501670181° = 89°51'1″ = 1.57334114057 rad
∠ B' = β' = 118.1676944482° = 118°10'1″ = 1.07991904054 rad
∠ C' = γ' = 151.98328885° = 151°58'58″ = 0.48989908426 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    