# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 45   b = 110.53   c = 99

Area: T = 2225.355547894
Perimeter: p = 254.53
Semiperimeter: s = 127.265

Angle ∠ A = α = 244.0000426611° = 24° = 0.41988797651 rad
Angle ∠ B = β = 92.51443676554° = 92°30'52″ = 1.6154680321 rad
Angle ∠ C = γ = 63.48655896835° = 63°29'8″ = 1.10880325675 rad

Height: ha = 98.90546879527
Height: hb = 40.26769950047
Height: hc = 44.95766763421

Median: ma = 102.483263487
Median: mb = 53.46875581545
Median: mc = 68.3422449839

Inradius: r = 17.48659975558
Circumradius: R = 55.31882575392

Vertex coordinates: A[99; 0] B[0; 0] C[-1.97441459596; 44.95766763421]
Centroid: CG[32.34219513468; 14.98655587807]
Coordinates of the circumscribed circle: U[49.5; 24.69553359397]
Coordinates of the inscribed circle: I[16.735; 17.48659975558]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1565.999957339° = 156° = 0.41988797651 rad
∠ B' = β' = 87.48656323446° = 87°29'8″ = 1.6154680321 rad
∠ C' = γ' = 116.5144410316° = 116°30'52″ = 1.10880325675 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    