# 6 13 14 triangle

### Acute scalene triangle.

Sides: a = 6   b = 13   c = 14

Area: T = 38.93550420573
Perimeter: p = 33
Semiperimeter: s = 16.5

Angle ∠ A = α = 25.33216750167° = 25°19'54″ = 0.44221211341 rad
Angle ∠ B = β = 67.9765687163° = 67°58'32″ = 1.18663995523 rad
Angle ∠ C = γ = 86.69326378203° = 86°41'34″ = 1.51330719672 rad

Height: ha = 12.97883473524
Height: hb = 5.99900064703
Height: hc = 5.56221488653

Median: ma = 13.17219398723
Median: mb = 8.58877820187
Median: mc = 7.31443694192

Inradius: r = 2.36596995186
Circumradius: R = 7.01216785696

Vertex coordinates: A[14; 0] B[0; 0] C[2.25; 5.56221488653]
Centroid: CG[5.41766666667; 1.85440496218]
Coordinates of the circumscribed circle: U[7; 0.40545199175]
Coordinates of the inscribed circle: I[3.5; 2.36596995186]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 154.6688324983° = 154°40'6″ = 0.44221211341 rad
∠ B' = β' = 112.0244312837° = 112°1'28″ = 1.18663995523 rad
∠ C' = γ' = 93.30773621797° = 93°18'26″ = 1.51330719672 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.