# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 2.88   b = 1.1   c = 2.66

Area: T = 1.46329983459
Perimeter: p = 6.64
Semiperimeter: s = 3.32

Angle ∠ A = α = 90.08661590994° = 90°5'10″ = 1.57223000868 rad
Angle ∠ B = β = 22.45441513641° = 22°27'15″ = 0.3921898872 rad
Angle ∠ C = γ = 67.46596895365° = 67°27'35″ = 1.17773936948 rad

Height: ha = 1.01659710735
Height: hb = 2.66599969925
Height: hc = 1.10999987563

Median: ma = 1.43884714109
Median: mb = 2.71770756338
Median: mc = 1.7277223205

Inradius: r = 0.44106621524
Circumradius: R = 1.44400016281

Vertex coordinates: A[2.66; 0] B[0; 0] C[2.66216541353; 1.10999987563]
Centroid: CG[1.77438847118; 0.36766662521]
Coordinates of the circumscribed circle: U[1.33; 0.55220006241]
Coordinates of the inscribed circle: I[2.22; 0.44106621524]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 89.91438409006° = 89°54'50″ = 1.57223000868 rad
∠ B' = β' = 157.5465848636° = 157°32'45″ = 0.3921898872 rad
∠ C' = γ' = 112.5440310464° = 112°32'25″ = 1.17773936948 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    