# 14 19 25 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 19   c = 25

Area: T = 131.9099059583
Perimeter: p = 58
Semiperimeter: s = 29

Angle ∠ A = α = 33.73987226487° = 33°44'19″ = 0.58988517956 rad
Angle ∠ B = β = 48.91876668595° = 48°55'4″ = 0.85437743491 rad
Angle ∠ C = γ = 97.34436104917° = 97°20'37″ = 1.69989665089 rad

Height: ha = 18.8444151369
Height: hb = 13.88551641666
Height: hc = 10.55327247666

Median: ma = 21.07113075057
Median: mb = 17.89655301682
Median: mc = 11.05766721937

Inradius: r = 4.54985882615
Circumradius: R = 12.60333799745

Vertex coordinates: A[25; 0] B[0; 0] C[9.2; 10.55327247666]
Centroid: CG[11.4; 3.51875749222]
Coordinates of the circumscribed circle: U[12.5; -1.61109583426]
Coordinates of the inscribed circle: I[10; 4.54985882615]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 146.2611277351° = 146°15'41″ = 0.58988517956 rad
∠ B' = β' = 131.082233314° = 131°4'56″ = 0.85437743491 rad
∠ C' = γ' = 82.65663895083° = 82°39'23″ = 1.69989665089 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.