# 6 16 19 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 16   c = 19

Area: T = 44.79332751649
Perimeter: p = 41
Semiperimeter: s = 20.5

Angle ∠ A = α = 17.13991052292° = 17°8'21″ = 0.29991338171 rad
Angle ∠ B = β = 51.79990771692° = 51°47'57″ = 0.90440644461 rad
Angle ∠ C = γ = 111.0621817602° = 111°3'43″ = 1.93883943904 rad

Height: ha = 14.93110917216
Height: hb = 5.59991593956
Height: hc = 4.71550815963

Median: ma = 17.30660682999
Median: mb = 11.59774135047
Median: mc = 7.46765922615

Inradius: r = 2.18550378129
Circumradius: R = 10.18800995422

Vertex coordinates: A[19; 0] B[0; 0] C[3.71105263158; 4.71550815963]
Centroid: CG[7.57701754386; 1.57216938654]
Coordinates of the circumscribed circle: U[9.5; -3.6588473273]
Coordinates of the inscribed circle: I[4.5; 2.18550378129]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 162.8610894771° = 162°51'39″ = 0.29991338171 rad
∠ B' = β' = 128.2010922831° = 128°12'3″ = 0.90440644461 rad
∠ C' = γ' = 68.93881823984° = 68°56'17″ = 1.93883943904 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.