# 6 9 14 triangle

### Obtuse scalene triangle.

Sides: a = 6   b = 9   c = 14

Area: T = 18.41102552943
Perimeter: p = 29
Semiperimeter: s = 14.5

Angle ∠ A = α = 16.9911286937° = 16°59'29″ = 0.29765539012 rad
Angle ∠ B = β = 25.99879769925° = 25°59'53″ = 0.45437502974 rad
Angle ∠ C = γ = 137.0110736071° = 137°39″ = 2.3911288455 rad

Height: ha = 6.13767517648
Height: hb = 4.09111678432
Height: hc = 2.63300364706

Median: ma = 11.38798066767
Median: mb = 9.78551928954
Median: mc = 3.08222070015

Inradius: r = 1.27696727789
Circumradius: R = 10.26660173354

Vertex coordinates: A[14; 0] B[0; 0] C[5.39328571429; 2.63300364706]
Centroid: CG[6.46442857143; 0.87766788235]
Coordinates of the circumscribed circle: U[7; -7.50994015694]
Coordinates of the inscribed circle: I[5.5; 1.27696727789]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 163.0098713063° = 163°31″ = 0.29765539012 rad
∠ B' = β' = 154.0022023008° = 154°7″ = 0.45437502974 rad
∠ C' = γ' = 42.98992639295° = 42°59'21″ = 2.3911288455 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.