# 2 13 14 triangle

### Obtuse scalene triangle.

Sides: a = 2   b = 13   c = 14

Area: T = 11.65992238164
Perimeter: p = 29
Semiperimeter: s = 14.5

Angle ∠ A = α = 7.36111606635° = 7°21'40″ = 0.12884764903 rad
Angle ∠ B = β = 56.38876254015° = 56°23'15″ = 0.98441497206 rad
Angle ∠ C = γ = 116.2511213935° = 116°15'4″ = 2.02989664426 rad

Height: ha = 11.65992238164
Height: hb = 1.7943726741
Height: hc = 1.66656034023

Median: ma = 13.47221935853
Median: mb = 7.59993420768
Median: mc = 6.1243724357

Inradius: r = 0.80440844011
Circumradius: R = 7.80549792536

Vertex coordinates: A[14; 0] B[0; 0] C[1.10771428571; 1.66656034023]
Centroid: CG[5.03657142857; 0.55552011341]
Coordinates of the circumscribed circle: U[7; -3.45222023622]
Coordinates of the inscribed circle: I[1.5; 0.80440844011]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 172.6398839336° = 172°38'20″ = 0.12884764903 rad
∠ B' = β' = 123.6122374598° = 123°36'45″ = 0.98441497206 rad
∠ C' = γ' = 63.7498786065° = 63°44'56″ = 2.02989664426 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.