# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 35   b = 33   c = 25.31

Area: T = 398.106640753
Perimeter: p = 93.31
Semiperimeter: s = 46.655

Angle ∠ A = α = 72.4188016457° = 72°25'5″ = 1.26439328249 rad
Angle ∠ B = β = 64.00223769031° = 64°9″ = 1.11770522061 rad
Angle ∠ C = γ = 43.58796066399° = 43°34'47″ = 0.76106076226 rad

Height: ha = 22.74989375732
Height: hb = 24.12876610624
Height: hc = 31.4588428094

Median: ma = 23.63436211783
Median: mb = 25.70111293526
Median: mc = 31.5732946885

Inradius: r = 8.53329848361
Circumradius: R = 18.35875605963

Vertex coordinates: A[25.31; 0] B[0; 0] C[15.34216851047; 31.4588428094]
Centroid: CG[13.55105617016; 10.4866142698]
Coordinates of the circumscribed circle: U[12.655; 13.29985339811]
Coordinates of the inscribed circle: I[13.655; 8.53329848361]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 107.5821983543° = 107°34'55″ = 1.26439328249 rad
∠ B' = β' = 115.9987623097° = 115°59'51″ = 1.11770522061 rad
∠ C' = γ' = 136.422039336° = 136°25'13″ = 0.76106076226 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    