# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 10.6   b = 8.1   c = 3.87

Area: T = 13.51215870468
Perimeter: p = 22.57
Semiperimeter: s = 11.285

Angle ∠ A = α = 120.4510681057° = 120°27'2″ = 2.10222609707 rad
Angle ∠ B = β = 41.20444832333° = 41°12'16″ = 0.7199153899 rad
Angle ∠ C = γ = 18.34548357097° = 18°20'41″ = 0.32201777839 rad

Height: ha = 2.54993560466
Height: hb = 3.33661943326
Height: hc = 6.98327323239

Median: ma = 3.49333436705
Median: mb = 6.87550236363
Median: mc = 9.2332593081

Inradius: r = 1.19773050108
Circumradius: R = 6.14880231532

Vertex coordinates: A[3.87; 0] B[0; 0] C[7.97550516796; 6.98327323239]
Centroid: CG[3.94883505599; 2.32875774413]
Coordinates of the circumscribed circle: U[1.935; 5.83655774086]
Coordinates of the inscribed circle: I[3.185; 1.19773050108]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 59.5499318943° = 59°32'58″ = 2.10222609707 rad
∠ B' = β' = 138.7965516767° = 138°47'44″ = 0.7199153899 rad
∠ C' = γ' = 161.655516429° = 161°39'19″ = 0.32201777839 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.