# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 3.61   b = 6.4   c = 6.32

Area: T = 11.0055070405
Perimeter: p = 16.33
Semiperimeter: s = 8.165

Angle ∠ A = α = 32.96772072651° = 32°58'2″ = 0.5755386312 rad
Angle ∠ B = β = 74.73440166305° = 74°44'2″ = 1.30443546534 rad
Angle ∠ C = γ = 72.29987761044° = 72°17'56″ = 1.26218516882 rad

Height: ha = 6.09769919141
Height: hb = 3.43990845016
Height: hc = 3.48326172168

Median: ma = 6.09986207457
Median: mb = 4.03107877642
Median: mc = 4.12443726796

Inradius: r = 1.34878347097
Circumradius: R = 3.31770455669

Vertex coordinates: A[6.32; 0] B[0; 0] C[0.95105142405; 3.48326172168]
Centroid: CG[2.42435047468; 1.16108724056]
Coordinates of the circumscribed circle: U[3.16; 1.00985590179]
Coordinates of the inscribed circle: I[1.765; 1.34878347097]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 147.0332792735° = 147°1'58″ = 0.5755386312 rad
∠ B' = β' = 105.266598337° = 105°15'58″ = 1.30443546534 rad
∠ C' = γ' = 107.7011223896° = 107°42'4″ = 1.26218516882 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    