# Triangle calculator SSS - result

Please enter the triangle sides:

### Equilateral triangle.

Sides: a = 34   b = 34   c = 34

Area: T = 500.5632683387
Perimeter: p = 102
Semiperimeter: s = 51

Angle ∠ A = α = 60° = 1.04771975512 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 60° = 1.04771975512 rad

Height: ha = 29.44548637287
Height: hb = 29.44548637287
Height: hc = 29.44548637287

Median: ma = 29.44548637287
Median: mb = 29.44548637287
Median: mc = 29.44548637287

Inradius: r = 9.81549545762
Circumradius: R = 19.63299091524

Vertex coordinates: A[34; 0] B[0; 0] C[17; 29.44548637287]
Centroid: CG[17; 9.81549545762]
Coordinates of the circumscribed circle: U[17; 9.81549545762]
Coordinates of the inscribed circle: I[17; 9.81549545762]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120° = 1.04771975512 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 120° = 1.04771975512 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    