# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 7   b = 4.61   c = 6.36

Area: T = 14.31217578274
Perimeter: p = 17.97
Semiperimeter: s = 8.985

Angle ∠ A = α = 77.49901376067° = 77°29'25″ = 1.35224580391 rad
Angle ∠ B = β = 40.01111079478° = 40°40″ = 0.69883255711 rad
Angle ∠ C = γ = 62.49987544455° = 62°29'56″ = 1.09108090435 rad

Height: ha = 4.0899073665
Height: hb = 6.2099005565
Height: hc = 4.50105527759

Median: ma = 4.3132870274
Median: mb = 6.27878798173
Median: mc = 5.00113648137

Inradius: r = 1.59328500643
Circumradius: R = 3.58551151633

Vertex coordinates: A[6.36; 0] B[0; 0] C[5.36114386792; 4.50105527759]
Centroid: CG[3.90771462264; 1.55001842586]
Coordinates of the circumscribed circle: U[3.18; 1.65554910854]
Coordinates of the inscribed circle: I[4.375; 1.59328500643]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 102.5109862393° = 102°30'35″ = 1.35224580391 rad
∠ B' = β' = 139.9898892052° = 139°59'20″ = 0.69883255711 rad
∠ C' = γ' = 117.5011245555° = 117°30'4″ = 1.09108090435 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    