# Triangle calculator SSS - result

### Obtuse scalene triangle.

Sides: a = 5.6   b = 3.9   c = 7.43

Area: T = 10.70444993519
Perimeter: p = 16.93
Semiperimeter: s = 8.465

Angle ∠ A = α = 47.63216152034° = 47°37'54″ = 0.83113285133 rad
Angle ∠ B = β = 30.96767424254° = 30°58' = 0.54404716139 rad
Angle ∠ C = γ = 101.4021642371° = 101°24'6″ = 1.77697925263 rad

Height: ha = 3.82330354828
Height: hb = 5.48994868471
Height: hc = 2.88114264743

Median: ma = 5.23113908285
Median: mb = 6.28333072502
Median: mc = 3.08795738342

Vertex coordinates: A[7.43; 0] B[0; 0] C[4.80218102288; 2.88114264743]
Centroid: CG[4.07772700763; 0.96604754914]
Coordinates of the circumscribed circle: U[3.715; -0.74991862171]
Coordinates of the inscribed circle: I[4.565; 1.26545598762]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 132.3688384797° = 132°22'6″ = 0.83113285133 rad
∠ B' = β' = 149.0333257575° = 149°2' = 0.54404716139 rad
∠ C' = γ' = 78.59883576288° = 78°35'54″ = 1.77697925263 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    