# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 7.62   b = 7.81   c = 3.61

Area: T = 13.52203231026
Perimeter: p = 19.04
Semiperimeter: s = 9.52

Angle ∠ A = α = 73.55443716918° = 73°33'16″ = 1.28437659653 rad
Angle ∠ B = β = 79.42111270733° = 79°25'16″ = 1.38661601631 rad
Angle ∠ C = γ = 27.02545012349° = 27°1'28″ = 0.47216665253 rad

Height: ha = 3.54986412343
Height: hb = 3.46223106537
Height: hc = 7.49904837134

Median: ma = 4.74332056671
Median: mb = 4.50554661246
Median: mc = 7.50114815203

Inradius: r = 1.42202020066
Circumradius: R = 3.97325204858

Vertex coordinates: A[3.61; 0] B[0; 0] C[1.39989473684; 7.49904837134]
Centroid: CG[1.67696491228; 2.49768279045]
Coordinates of the circumscribed circle: U[1.805; 3.53987701268]
Coordinates of the inscribed circle: I[1.71; 1.42202020066]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 106.4465628308° = 106°26'44″ = 1.28437659653 rad
∠ B' = β' = 100.5798872927° = 100°34'44″ = 1.38661601631 rad
∠ C' = γ' = 152.9755498765° = 152°58'32″ = 0.47216665253 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    