# Triangle calculator SSS - result

### Obtuse scalene triangle.

Sides: a = 7.5   b = 5.3   c = 11.13

Area: T = 17.24329035011
Perimeter: p = 23.93
Semiperimeter: s = 11.965

Angle ∠ A = α = 35.77657396358° = 35°46'33″ = 0.6244404449 rad
Angle ∠ B = β = 24.40114431352° = 24°24'5″ = 0.42658855249 rad
Angle ∠ C = γ = 119.8232817229° = 119°49'22″ = 2.09113026797 rad

Height: ha = 4.59881076003
Height: hb = 6.50767560382
Height: hc = 3.09884552563

Median: ma = 7.86989865929
Median: mb = 9.11326807252
Median: mc = 3.34767558919

Vertex coordinates: A[11.13; 0] B[0; 0] C[6.8330049416; 3.09884552563]
Centroid: CG[5.98766831387; 1.03328184188]
Coordinates of the circumscribed circle: U[5.565; -3.19900492931]
Coordinates of the inscribed circle: I[6.665; 1.4411111868]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 144.2244260364° = 144°13'27″ = 0.6244404449 rad
∠ B' = β' = 155.5998556865° = 155°35'55″ = 0.42658855249 rad
∠ C' = γ' = 60.1777182771° = 60°10'38″ = 2.09113026797 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    