# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 10.5   b = 8.7   c = 2.7

Area: T = 9.56438234378
Perimeter: p = 21.9
Semiperimeter: s = 10.95

Angle ∠ A = α = 125.4832886919° = 125°28'58″ = 2.19900895317 rad
Angle ∠ B = β = 42.43105891344° = 42°25'50″ = 0.7410553484 rad
Angle ∠ C = γ = 12.08765239462° = 12°5'11″ = 0.2110949638 rad

Height: ha = 1.82216806548
Height: hb = 2.19985801007
Height: hc = 7.08443136577

Median: ma = 3.73219565914
Median: mb = 6.31224876238
Median: mc = 9.54771199846

Inradius: r = 0.87334085331
Circumradius: R = 6.44773429901

Vertex coordinates: A[2.7; 0] B[0; 0] C[7.75; 7.08443136577]
Centroid: CG[3.48333333333; 2.36114378859]
Coordinates of the circumscribed circle: U[1.35; 6.30444215937]
Coordinates of the inscribed circle: I[2.25; 0.87334085331]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 54.51771130805° = 54°31'2″ = 2.19900895317 rad
∠ B' = β' = 137.5699410866° = 137°34'10″ = 0.7410553484 rad
∠ C' = γ' = 167.9133476054° = 167°54'49″ = 0.2110949638 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.