# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 8.12   b = 4.69   c = 9.38

Area: T = 19.04113952321
Perimeter: p = 22.19
Semiperimeter: s = 11.095

Angle ∠ A = α = 59.95994618583° = 59°57'34″ = 1.04664900272 rad
Angle ∠ B = β = 309.9999917169° = 30° = 0.5243598631 rad
Angle ∠ C = γ = 90.04105464248° = 90°2'26″ = 1.57215039954 rad

Height: ha = 4.69899988256
Height: hb = 8.12199979668
Height: hc = 4.06599989834

Median: ma = 6.20553726721
Median: mb = 8.45334238626
Median: mc = 4.68771259851

Inradius: r = 1.71662140813
Circumradius: R = 4.69900011744

Vertex coordinates: A[9.38; 0] B[0; 0] C[7.03221268657; 4.06599989834]
Centroid: CG[5.47107089552; 1.35333329945]
Coordinates of the circumscribed circle: U[4.69; -0.00333189663]
Coordinates of the inscribed circle: I[6.405; 1.71662140813]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120.0410538142° = 120°2'26″ = 1.04664900272 rad
∠ B' = β' = 1500.000008283° = 150° = 0.5243598631 rad
∠ C' = γ' = 89.95994535752° = 89°57'34″ = 1.57215039954 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    