# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 162   b = 125   c = 54.95

Area: T = 2861.015537917
Perimeter: p = 341.95
Semiperimeter: s = 170.975

Angle ∠ A = α = 123.5866386456° = 123°35'11″ = 2.15769893543 rad
Angle ∠ B = β = 409.9999977791° = 40° = 0.6988131662 rad
Angle ∠ C = γ = 16.41436157645° = 16°24'49″ = 0.28664716372 rad

Height: ha = 35.32111775206
Height: hb = 45.77662460667
Height: hc = 104.1321587959

Median: ma = 52.54876093652
Median: mb = 103.5643995916
Median: mc = 142.0555004752

Inradius: r = 16.73435305113
Circumradius: R = 97.23327436705

Vertex coordinates: A[54.95; 0] B[0; 0] C[124.0999203822; 104.1321587959]
Centroid: CG[59.68330679406; 34.71105293196]
Coordinates of the circumscribed circle: U[27.475; 93.27702032628]
Coordinates of the inscribed circle: I[45.975; 16.73435305113]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 56.41436135436° = 56°24'49″ = 2.15769893543 rad
∠ B' = β' = 1400.000002221° = 140° = 0.6988131662 rad
∠ C' = γ' = 163.5866384236° = 163°35'11″ = 0.28664716372 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    