# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 4   b = 8   c = 10

Area: T = 15.19986841536
Perimeter: p = 22
Semiperimeter: s = 11

Angle ∠ A = α = 22.33216450092° = 22°19'54″ = 0.39897607328 rad
Angle ∠ B = β = 49.45883981265° = 49°27'30″ = 0.86332118901 rad
Angle ∠ C = γ = 108.2109956864° = 108°12'36″ = 1.88986200307 rad

Height: ha = 7.59993420768
Height: hb = 3.87996710384
Height: hc = 3.04397368307

Median: ma = 8.83217608663
Median: mb = 6.48107406984
Median: mc = 3.87329833462

Inradius: r = 1.38216985594
Circumradius: R = 5.26436135597

Vertex coordinates: A[10; 0] B[0; 0] C[2.6; 3.04397368307]
Centroid: CG[4.2; 1.01332456102]
Coordinates of the circumscribed circle: U[5; -1.64548792374]
Coordinates of the inscribed circle: I[3; 1.38216985594]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 157.6688354991° = 157°40'6″ = 0.39897607328 rad
∠ B' = β' = 130.5421601874° = 130°32'30″ = 0.86332118901 rad
∠ C' = γ' = 71.79900431357° = 71°47'24″ = 1.88986200307 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.