# 6 8 11 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 8   c = 11

Area: T = 23.4198742494
Perimeter: p = 25
Semiperimeter: s = 12.5

Angle ∠ A = α = 32.15772086093° = 32°9'26″ = 0.56112491685 rad
Angle ∠ B = β = 45.20771662976° = 45°12'26″ = 0.78990138974 rad
Angle ∠ C = γ = 102.6365625093° = 102°38'8″ = 1.79113295877 rad

Height: ha = 7.8066247498
Height: hb = 5.85546856235
Height: hc = 4.25879531807

Median: ma = 9.13878334412
Median: mb = 7.90656941504
Median: mc = 4.44440972087

Inradius: r = 1.87334993995
Circumradius: R = 5.63765110139

Vertex coordinates: A[11; 0] B[0; 0] C[4.22772727273; 4.25879531807]
Centroid: CG[5.07657575758; 1.41993177269]
Coordinates of the circumscribed circle: U[5.5; -1.23329867843]
Coordinates of the inscribed circle: I[4.5; 1.87334993995]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 147.8432791391° = 147°50'34″ = 0.56112491685 rad
∠ B' = β' = 134.7932833702° = 134°47'34″ = 0.78990138974 rad
∠ C' = γ' = 77.3644374907° = 77°21'52″ = 1.79113295877 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.