# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 6   b = 23   c = 23

Area: T = 68.41105255059
Perimeter: p = 52
Semiperimeter: s = 26

Angle ∠ A = α = 14.98994349079° = 14°59'22″ = 0.26216149922 rad
Angle ∠ B = β = 82.50552825461° = 82°30'19″ = 1.44399888307 rad
Angle ∠ C = γ = 82.50552825461° = 82°30'19″ = 1.44399888307 rad

Height: ha = 22.8043508502
Height: hb = 5.94987413483
Height: hc = 5.94987413483

Median: ma = 22.8043508502
Median: mb = 12.25876506721
Median: mc = 12.25876506721

Inradius: r = 2.63111740579
Circumradius: R = 11.59990923053

Vertex coordinates: A[23; 0] B[0; 0] C[0.78326086957; 5.94987413483]
Centroid: CG[7.92875362319; 1.98329137828]
Coordinates of the circumscribed circle: U[11.5; 1.51329250833]
Coordinates of the inscribed circle: I[3; 2.63111740579]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.0110565092° = 165°38″ = 0.26216149922 rad
∠ B' = β' = 97.49547174539° = 97°29'41″ = 1.44399888307 rad
∠ C' = γ' = 97.49547174539° = 97°29'41″ = 1.44399888307 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    