# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 101   b = 65   c = 105.01

Area: T = 3170.611093748
Perimeter: p = 271.01
Semiperimeter: s = 135.505

Angle ∠ A = α = 68.28438446568° = 68°17'2″ = 1.19217779152 rad
Angle ∠ B = β = 36.71988923336° = 36°43'8″ = 0.64108655689 rad
Angle ∠ C = γ = 74.99772630096° = 74°59'50″ = 1.30989491695 rad

Height: ha = 62.78443749996
Height: hb = 97.55772596147
Height: hc = 60.38768381579

Median: ma = 71.24546492728
Median: mb = 97.76440018105
Median: mc = 66.75549621751

Inradius: r = 23.39884792995
Circumradius: R = 54.35878716842

Vertex coordinates: A[105.01; 0] B[0; 0] C[80.95994329112; 60.38768381579]
Centroid: CG[61.99898109704; 20.12989460526]
Coordinates of the circumscribed circle: U[52.505; 14.07113605965]
Coordinates of the inscribed circle: I[70.505; 23.39884792995]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 111.7166155343° = 111°42'58″ = 1.19217779152 rad
∠ B' = β' = 143.2811107666° = 143°16'52″ = 0.64108655689 rad
∠ C' = γ' = 105.003273699° = 105°10″ = 1.30989491695 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    