# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 5   b = 14   c = 17

Area: T = 30.59441170816
Perimeter: p = 36
Semiperimeter: s = 18

Angle ∠ A = α = 14.89876656557° = 14°53'52″ = 0.26600133166 rad
Angle ∠ B = β = 46.04330532762° = 46°2'35″ = 0.80436028773 rad
Angle ∠ C = γ = 119.0599281068° = 119°3'33″ = 2.07879764597 rad

Height: ha = 12.23876468326
Height: hb = 4.37105881545
Height: hc = 3.59993078919

Median: ma = 15.37704261489
Median: mb = 10.39223048454
Median: mc = 6.18546584384

Inradius: r = 1.76996731712
Circumradius: R = 9.72440917006

Vertex coordinates: A[17; 0] B[0; 0] C[3.47105882353; 3.59993078919]
Centroid: CG[6.82435294118; 1.21997692973]
Coordinates of the circumscribed circle: U[8.5; -4.72331302546]
Coordinates of the inscribed circle: I[4; 1.76996731712]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.1022334344° = 165°6'8″ = 0.26600133166 rad
∠ B' = β' = 133.9576946724° = 133°57'25″ = 0.80436028773 rad
∠ C' = γ' = 60.9410718932° = 60°56'27″ = 2.07879764597 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    