Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 5.1   b = 4.1   c = 1.44

Area: T = 2.35437641003
Perimeter: p = 10.64
Semiperimeter: s = 5.32

Angle ∠ A = α = 127.1232635347° = 127°7'22″ = 2.21987085406 rad
Angle ∠ B = β = 39.86766734485° = 39°52' = 0.69658047135 rad
Angle ∠ C = γ = 13.01106912048° = 13°38″ = 0.22770793995 rad

Height: ha = 0.92330447452
Height: hb = 1.14881776099
Height: hc = 3.2699116806

Median: ma = 1.71444386837
Median: mb = 3.13767658504
Median: mc = 4.57107329828

Inradius: r = 0.4422436861
Circumradius: R = 3.1988111484

Vertex coordinates: A[1.44; 0] B[0; 0] C[3.91444444444; 3.2699116806]
Centroid: CG[1.78548148148; 1.0989705602]
Coordinates of the circumscribed circle: U[0.72; 3.11660097985]
Coordinates of the inscribed circle: I[1.22; 0.4422436861]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 52.87773646533° = 52°52'38″ = 2.21987085406 rad
∠ B' = β' = 140.1333326552° = 140°8' = 0.69658047135 rad
∠ C' = γ' = 166.9899308795° = 166°59'22″ = 0.22770793995 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     