# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 19   b = 24   c = 25

Area: T = 214.2432852856
Perimeter: p = 68
Semiperimeter: s = 34

Angle ∠ A = α = 45.57329959992° = 45°34'23″ = 0.79553988302 rad
Angle ∠ B = β = 64.4322194089° = 64°25'56″ = 1.12545539311 rad
Angle ∠ C = γ = 69.99548099118° = 69°59'41″ = 1.22216398923 rad

Height: ha = 22.5521879248
Height: hb = 17.85435710714
Height: hc = 17.13994282285

Median: ma = 22.58987139962
Median: mb = 18.68215416923
Median: mc = 17.67105970471

Inradius: r = 6.30112603781
Circumradius: R = 13.30326607983

Vertex coordinates: A[25; 0] B[0; 0] C[8.2; 17.13994282285]
Centroid: CG[11.06766666667; 5.71331427428]
Coordinates of the circumscribed circle: U[12.5; 4.55109102731]
Coordinates of the inscribed circle: I[10; 6.30112603781]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.4277004001° = 134°25'37″ = 0.79553988302 rad
∠ B' = β' = 115.5687805911° = 115°34'4″ = 1.12545539311 rad
∠ C' = γ' = 110.0055190088° = 110°19″ = 1.22216398923 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   