# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 13   b = 14   c = 25

Area: T = 63.68767333124
Perimeter: p = 52
Semiperimeter: s = 26

Angle ∠ A = α = 21.34113905316° = 21°20'29″ = 0.37224775317 rad
Angle ∠ B = β = 23.07439180656° = 23°4'26″ = 0.40327158416 rad
Angle ∠ C = γ = 135.5854691403° = 135°35'5″ = 2.36663992803 rad

Height: ha = 9.79879589711
Height: hb = 9.09881047589
Height: hc = 5.0954938665

Median: ma = 19.19898410624
Median: mb = 18.65547581062
Median: mc = 5.1233475383

Inradius: r = 2.44994897428
Circumradius: R = 17.86108627078

Vertex coordinates: A[25; 0] B[0; 0] C[11.96; 5.0954938665]
Centroid: CG[12.32; 1.69883128883]
Coordinates of the circumscribed circle: U[12.5; -12.7587759077]
Coordinates of the inscribed circle: I[12; 2.44994897428]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 158.6598609468° = 158°39'31″ = 0.37224775317 rad
∠ B' = β' = 156.9266081934° = 156°55'34″ = 0.40327158416 rad
∠ C' = γ' = 44.41553085972° = 44°24'55″ = 2.36663992803 rad

# How did we calculate this triangle?

### 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.