# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 6   b = 23   c = 28

Area: T = 41.99333030375
Perimeter: p = 57
Semiperimeter: s = 28.5

Angle ∠ A = α = 7.49435155488° = 7°29'37″ = 0.13107865189 rad
Angle ∠ B = β = 29.99547255274° = 29°59'41″ = 0.52435067187 rad
Angle ∠ C = γ = 142.5121758924° = 142°30'42″ = 2.4877299416 rad

Height: ha = 13.99877676792
Height: hb = 3.65215915685
Height: hc = 32.9995216455

Median: ma = 25.44660213
Median: mb = 16.66658333125
Median: mc = 9.30105376189

Inradius: r = 1.47334492294
Circumradius: R = 23.00436679691

Vertex coordinates: A[28; 0] B[0; 0] C[5.19664285714; 32.9995216455]
Centroid: CG[11.06554761905; 10.9998405485]
Coordinates of the circumscribed circle: U[14; -18.25329104537]
Coordinates of the inscribed circle: I[5.5; 1.47334492294]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 172.5066484451° = 172°30'23″ = 0.13107865189 rad
∠ B' = β' = 150.0055274473° = 150°19″ = 0.52435067187 rad
∠ C' = γ' = 37.48882410762° = 37°29'18″ = 2.4877299416 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    