# Triangle calculator SSS - result

### Obtuse scalene triangle.

Sides: a = 1.06   b = 0.87   c = 0.4

Area: T = 0.16661496144
Perimeter: p = 2.33
Semiperimeter: s = 1.165

Angle ∠ A = α = 107.2766470416° = 107°16'35″ = 1.87223276187 rad
Angle ∠ B = β = 51.60328724113° = 51°36'10″ = 0.90106400271 rad
Angle ∠ C = γ = 21.12106571729° = 21°7'14″ = 0.36986250079 rad

Height: ha = 0.31334898385
Height: hb = 0.38219531366
Height: hc = 0.83107480721

Median: ma = 0.42113668236
Median: mb = 0.67327369471
Median: mc = 0.94988150505

Vertex coordinates: A[0.4; 0] B[0; 0] C[0.6588375; 0.83107480721]
Centroid: CG[0.35327916667; 0.2776916024]
Coordinates of the circumscribed circle: U[0.2; 0.51877562421]
Coordinates of the inscribed circle: I[0.295; 0.14326176948]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 72.72435295842° = 72°43'25″ = 1.87223276187 rad
∠ B' = β' = 128.3977127589° = 128°23'50″ = 0.90106400271 rad
∠ C' = γ' = 158.8799342827° = 158°52'46″ = 0.36986250079 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    