# 6 26 30 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 26   c = 30

Area: T = 62.24994979899
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 9.18444977727° = 9°11'4″ = 0.16602997263 rad
Angle ∠ B = β = 43.76217426927° = 43°45'42″ = 0.76437864964 rad
Angle ∠ C = γ = 127.0543759535° = 127°3'14″ = 2.21875064309 rad

Height: ha = 20.75498326633
Height: hb = 4.78884229223
Height: hc = 4.15499665327

Median: ma = 27.91105714739
Median: mb = 17.29216164658
Median: mc = 11.44655231423

Inradius: r = 2.00880483223
Circumradius: R = 18.79553322963

Vertex coordinates: A[30; 0] B[0; 0] C[4.33333333333; 4.15499665327]
Centroid: CG[11.44444444444; 1.38333221776]
Coordinates of the circumscribed circle: U[15; -11.32553925375]
Coordinates of the inscribed circle: I[5; 2.00880483223]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 170.8165502227° = 170°48'56″ = 0.16602997263 rad
∠ B' = β' = 136.2388257307° = 136°14'18″ = 0.76437864964 rad
∠ C' = γ' = 52.94662404654° = 52°56'46″ = 2.21875064309 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 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.