# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 13   b = 17   c = 19

Area: T = 107.8066249819
Perimeter: p = 49
Semiperimeter: s = 24.5

Angle ∠ A = α = 41.87767878296° = 41°52'36″ = 0.73108878278 rad
Angle ∠ B = β = 60.88003549713° = 60°48'1″ = 1.06111663806 rad
Angle ∠ C = γ = 77.32328571991° = 77°19'22″ = 1.35495384452 rad

Height: ha = 16.58655768952
Height: hb = 12.6833088214
Height: hc = 11.34880262967

Median: ma = 16.81551717208
Median: mb = 13.88334433769
Median: mc = 11.77992189894

Inradius: r = 4.44002550946
Circumradius: R = 9.73773760961

Vertex coordinates: A[19; 0] B[0; 0] C[6.34221052632; 11.34880262967]
Centroid: CG[8.44773684211; 3.78326754322]
Coordinates of the circumscribed circle: U[9.5; 2.13769354781]
Coordinates of the inscribed circle: I[7.5; 4.44002550946]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 138.123321217° = 138°7'24″ = 0.73108878278 rad
∠ B' = β' = 119.2199645029° = 119°11'59″ = 1.06111663806 rad
∠ C' = γ' = 102.6777142801° = 102°40'38″ = 1.35495384452 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.