# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 11   b = 13   c = 19

Area: T = 69.26217318582
Perimeter: p = 43
Semiperimeter: s = 21.5

Angle ∠ A = α = 34.11327839945° = 34°6'46″ = 0.59553803977 rad
Angle ∠ B = β = 41.51331322663° = 41°30'47″ = 0.72545408409 rad
Angle ∠ C = γ = 104.3744083739° = 104°22'27″ = 1.8221671415 rad

Height: ha = 12.5933042156
Height: hb = 10.65656510551
Height: hc = 7.29107086167

Median: ma = 15.3221553446
Median: mb = 14.09878721799
Median: mc = 7.39993242935

Inradius: r = 3.22114759004
Circumradius: R = 9.8077002825

Vertex coordinates: A[19; 0] B[0; 0] C[8.23768421053; 7.29107086167]
Centroid: CG[9.07989473684; 2.43302362056]
Coordinates of the circumscribed circle: U[9.5; -2.43546055964]
Coordinates of the inscribed circle: I[8.5; 3.22114759004]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 145.8877216006° = 145°53'14″ = 0.59553803977 rad
∠ B' = β' = 138.4876867734° = 138°29'13″ = 0.72545408409 rad
∠ C' = γ' = 75.62659162608° = 75°37'33″ = 1.8221671415 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 ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.