Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 3.4   b = 3.19   c = 4.8

Area: T = 5.41331940016
Perimeter: p = 11.39
Semiperimeter: s = 5.695

Angle ∠ A = α = 44.99656024997° = 44°59'44″ = 0.78553214125 rad
Angle ∠ B = β = 41.55882869951° = 41°33'30″ = 0.72553289396 rad
Angle ∠ C = γ = 93.44661105052° = 93°26'46″ = 1.63109423015 rad

Height: ha = 3.18442317657
Height: hb = 3.39438520386
Height: hc = 2.25554975007

Median: ma = 3.70437886009
Median: mb = 3.84113506739
Median: mc = 2.26600995553

Inradius: r = 0.9510516945
Circumradius: R = 2.40443475989

Vertex coordinates: A[4.8; 0] B[0; 0] C[2.544415625; 2.25554975007]
Centroid: CG[2.44880520833; 0.75218325002]
Coordinates of the circumscribed circle: U[2.4; -0.14545246558]
Coordinates of the inscribed circle: I[2.505; 0.9510516945]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.00443975° = 135°16″ = 0.78553214125 rad
∠ B' = β' = 138.4421713005° = 138°26'30″ = 0.72553289396 rad
∠ C' = γ' = 86.55438894948° = 86°33'14″ = 1.63109423015 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     