# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 8   b = 26   c = 30

Area: T = 96
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 14.25500326978° = 14°15' = 0.24987099891 rad
Angle ∠ B = β = 53.13301023542° = 53°7'48″ = 0.9277295218 rad
Angle ∠ C = γ = 112.6219864948° = 112°37'11″ = 1.96655874465 rad

Height: ha = 24
Height: hb = 7.38546153846
Height: hc = 6.4

Median: ma = 27.78548879789
Median: mb = 17.6921806013
Median: mc = 12.04215945788

Inradius: r = 3
Circumradius: R = 16.25

Vertex coordinates: A[30; 0] B[0; 0] C[4.8; 6.4]
Centroid: CG[11.6; 2.13333333333]
Coordinates of the circumscribed circle: U[15; -6.25]
Coordinates of the inscribed circle: I[6; 3]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.7549967302° = 165°45' = 0.24987099891 rad
∠ B' = β' = 126.8769897646° = 126°52'12″ = 0.9277295218 rad
∠ C' = γ' = 67.3880135052° = 67°22'49″ = 1.96655874465 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   