# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 18.76   b = 16.15   c = 27.2

Area: T = 148.1188128052
Perimeter: p = 62.11
Semiperimeter: s = 31.055

Angle ∠ A = α = 42.40550699785° = 42°24'18″ = 0.74401080907 rad
Angle ∠ B = β = 35.48989390369° = 35°29'20″ = 0.61993988342 rad
Angle ∠ C = γ = 102.1065990985° = 102°6'22″ = 1.78220857287 rad

Height: ha = 15.79108452081
Height: hb = 18.34328022355
Height: hc = 10.89110388273

Median: ma = 20.30663253692
Median: mb = 21.92444880214
Median: mc = 11.01990766401

Inradius: r = 4.776954204
Circumradius: R = 13.90993251252

Vertex coordinates: A[27.2; 0] B[0; 0] C[15.27549099265; 10.89110388273]
Centroid: CG[14.15883033088; 3.63303462758]
Coordinates of the circumscribed circle: U[13.6; -2.91770748084]
Coordinates of the inscribed circle: I[14.905; 4.776954204]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 137.5954930021° = 137°35'42″ = 0.74401080907 rad
∠ B' = β' = 144.5111060963° = 144°30'40″ = 0.61993988342 rad
∠ C' = γ' = 77.89440090155° = 77°53'38″ = 1.78220857287 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.