# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 135   b = 90   c = 191.96

Area: T = 5475.759889418
Perimeter: p = 416.96
Semiperimeter: s = 208.48

Angle ∠ A = α = 39.33884807562° = 39°20'19″ = 0.68765860119 rad
Angle ∠ B = β = 24.99988646155° = 24°59'56″ = 0.43663124968 rad
Angle ∠ C = γ = 115.6632654628° = 115°39'46″ = 2.01986941449 rad

Height: ha = 81.12223539878
Height: hb = 121.6843530982
Height: hc = 57.05110407812

Median: ma = 133.8588398317
Median: mb = 159.7244202299
Median: mc = 62.85217271044

Inradius: r = 26.2655152025
Circumradius: R = 106.4843596387

Vertex coordinates: A[191.96; 0] B[0; 0] C[122.3532681809; 57.05110407812]
Centroid: CG[104.7710893936; 19.01770135937]
Coordinates of the circumscribed circle: U[95.98; -46.11550289982]
Coordinates of the inscribed circle: I[118.48; 26.2655152025]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 140.6621519244° = 140°39'41″ = 0.68765860119 rad
∠ B' = β' = 155.0011135385° = 155°4″ = 0.43663124968 rad
∠ C' = γ' = 64.33773453717° = 64°20'14″ = 2.01986941449 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    