# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 264.39   b = 254.22   c = 132.2

Area: T = 16524.71099057
Perimeter: p = 650.81
Semiperimeter: s = 325.405

Angle ∠ A = α = 79.54403309817° = 79°32'25″ = 1.38882406638 rad
Angle ∠ B = β = 71.00766275549° = 71°24″ = 1.23992994416 rad
Angle ∠ C = γ = 29.45330414635° = 29°27'11″ = 0.51440525483 rad

Height: ha = 125.0032533422
Height: hb = 130.0033224811
Height: hc = 249.9965611281

Median: ma = 153.547740693
Median: mb = 165.9299213673
Median: mc = 250.7990211631

Inradius: r = 50.78219790897
Circumradius: R = 134.4298811481

Vertex coordinates: A[132.2; 0] B[0; 0] C[86.04880472769; 249.9965611281]
Centroid: CG[72.74993490923; 83.33218704271]
Coordinates of the circumscribed circle: U[66.1; 117.0555095388]
Coordinates of the inscribed circle: I[71.185; 50.78219790897]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 100.4659669018° = 100°27'35″ = 1.38882406638 rad
∠ B' = β' = 108.9933372445° = 108°59'36″ = 1.23992994416 rad
∠ C' = γ' = 150.5476958537° = 150°32'49″ = 0.51440525483 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    