# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 90   b = 100   c = 95.39

Area: T = 3897.006636098
Perimeter: p = 285.39
Semiperimeter: s = 142.695

Angle ∠ A = α = 54.79223683876° = 54°47'33″ = 0.95663072333 rad
Angle ∠ B = β = 65.21103805764° = 65°12'37″ = 1.13881358475 rad
Angle ∠ C = γ = 59.99772510361° = 59°59'50″ = 1.04771495727 rad

Height: ha = 86.66001413552
Height: hb = 77.94401272197
Height: hc = 81.70768112167

Median: ma = 86.74546024257
Median: mb = 78.11001027528
Median: mc = 82.31215239502

Inradius: r = 27.31100414239
Circumradius: R = 55.07549678391

Vertex coordinates: A[95.39; 0] B[0; 0] C[37.73658847888; 81.70768112167]
Centroid: CG[44.37552949296; 27.23656037389]
Coordinates of the circumscribed circle: U[47.695; 27.54397722845]
Coordinates of the inscribed circle: I[42.695; 27.31100414239]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 125.2087631612° = 125°12'27″ = 0.95663072333 rad
∠ B' = β' = 114.7989619424° = 114°47'23″ = 1.13881358475 rad
∠ C' = γ' = 120.0032748964° = 120°10″ = 1.04771495727 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    