# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 2   b = 21   c = 22

Area: T = 18.59993951515
Perimeter: p = 45
Semiperimeter: s = 22.5

Angle ∠ A = α = 4.6188275596° = 4°37'6″ = 0.08106041149 rad
Angle ∠ B = β = 57.71877199078° = 57°43'4″ = 1.00773642491 rad
Angle ∠ C = γ = 117.6644004496° = 117°39'50″ = 2.05436242895 rad

Height: ha = 18.59993951515
Height: hb = 1.77113709668
Height: hc = 1.69108541047

Median: ma = 21.48325510589
Median: mb = 11.56550335062
Median: mc = 10.07547208398

Inradius: r = 0.82766397845
Circumradius: R = 12.42197587136

Vertex coordinates: A[22; 0] B[0; 0] C[1.06881818182; 1.69108541047]
Centroid: CG[7.68993939394; 0.56436180349]
Coordinates of the circumscribed circle: U[11; -5.76663165456]
Coordinates of the inscribed circle: I[1.5; 0.82766397845]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 175.3821724404° = 175°22'54″ = 0.08106041149 rad
∠ B' = β' = 122.2822280092° = 122°16'56″ = 1.00773642491 rad
∠ C' = γ' = 62.33659955038° = 62°20'10″ = 2.05436242895 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.