# Triangle calculator SSS - result

### Obtuse isosceles triangle.

Sides: a = 5.83   b = 5.83   c = 8.25

Area: T = 16.9944436808
Perimeter: p = 19.91
Semiperimeter: s = 9.955

Angle ∠ A = α = 44.96443048629° = 44°57'51″ = 0.78547751657 rad
Angle ∠ B = β = 44.96443048629° = 44°57'51″ = 0.78547751657 rad
Angle ∠ C = γ = 90.07113902742° = 90°4'17″ = 1.57220423221 rad

Height: ha = 5.83299954745
Height: hb = 5.83299954745
Height: hc = 4.12198634686

Median: ma = 6.52113859723
Median: mb = 6.52113859723
Median: mc = 4.12198634686

Vertex coordinates: A[8.25; 0] B[0; 0] C[4.125; 4.12198634686]
Centroid: CG[4.125; 1.37332878229]
Coordinates of the circumscribed circle: U[4.125; -0.00551397334]
Coordinates of the inscribed circle: I[4.125; 1.70771257467]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.0365695137° = 135°2'9″ = 0.78547751657 rad
∠ B' = β' = 135.0365695137° = 135°2'9″ = 0.78547751657 rad
∠ C' = γ' = 89.92986097258° = 89°55'43″ = 1.57220423221 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    