# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 9.43   b = 7.21   c = 4.12

Area: T = 13.98986974447
Perimeter: p = 20.76
Semiperimeter: s = 10.38

Angle ∠ A = α = 109.6387972411° = 109°38'17″ = 1.91435436038 rad
Angle ∠ B = β = 46.06334975537° = 46°3'49″ = 0.80439596973 rad
Angle ∠ C = γ = 24.29985300356° = 24°17'55″ = 0.42440893525 rad

Height: ha = 2.96768499353
Height: hb = 3.88803599014
Height: hc = 6.79106298275

Median: ma = 3.54997178458
Median: mb = 6.32108879914
Median: mc = 8.13770080496

Inradius: r = 1.34876587134
Circumradius: R = 5.00661851203

Vertex coordinates: A[4.12; 0] B[0; 0] C[6.54331067961; 6.79106298275]
Centroid: CG[3.5544368932; 2.26435432758]
Coordinates of the circumscribed circle: U[2.06; 4.56327063744]
Coordinates of the inscribed circle: I[3.17; 1.34876587134]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 70.36220275893° = 70°21'43″ = 1.91435436038 rad
∠ B' = β' = 133.9376502446° = 133°56'11″ = 0.80439596973 rad
∠ C' = γ' = 155.7011469964° = 155°42'5″ = 0.42440893525 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.