# Triangle calculator SSS - result

### Obtuse scalene triangle.

Sides: a = 2.9   b = 7.49   c = 6.2

Area: T = 8.68774811151
Perimeter: p = 16.59
Semiperimeter: s = 8.295

Angle ∠ A = α = 21.97220328993° = 21°58'19″ = 0.38334843174 rad
Angle ∠ B = β = 104.9065943454° = 104°54'21″ = 1.83109541182 rad
Angle ∠ C = γ = 53.12220236467° = 53°7'19″ = 0.9277154218 rad

Height: ha = 5.99113662862
Height: hb = 2.32197546369
Height: hc = 2.80224132629

Median: ma = 6.72106807691
Median: mb = 3.06659378663
Median: mc = 4.75986815401

Vertex coordinates: A[6.2; 0] B[0; 0] C[-0.74659758065; 2.80224132629]
Centroid: CG[1.81880080645; 0.93441377543]
Coordinates of the circumscribed circle: U[3.1; 2.32656830412]
Coordinates of the inscribed circle: I[0.805; 1.04773153846]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 158.0287967101° = 158°1'41″ = 0.38334843174 rad
∠ B' = β' = 75.0944056546° = 75°5'39″ = 1.83109541182 rad
∠ C' = γ' = 126.8787976353° = 126°52'41″ = 0.9277154218 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    