5 17 19 triangle
Obtuse scalene triangle.
Sides: a = 5 b = 17 c = 19Area: T = 40.84334511274
Perimeter: p = 41
Semiperimeter: s = 20.5
Angle ∠ A = α = 14.6499222929° = 14°38'57″ = 0.2565677173 rad
Angle ∠ B = β = 59.30111062669° = 59°18'4″ = 1.03549995544 rad
Angle ∠ C = γ = 106.0549670804° = 106°2'59″ = 1.85109159262 rad
Height: ha = 16.3377380451
Height: hb = 4.80551118973
Height: hc = 4.2999310645
Median: ma = 17.85435710714
Median: mb = 10.98986304879
Median: mc = 8.17700673192
Inradius: r = 1.99223634696
Circumradius: R = 9.88553056942
Vertex coordinates: A[19; 0] B[0; 0] C[2.55326315789; 4.2999310645]
Centroid: CG[7.18442105263; 1.43331035483]
Coordinates of the circumscribed circle: U[9.5; -2.73329962802]
Coordinates of the inscribed circle: I[3.5; 1.99223634696]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.3510777071° = 165°21'3″ = 0.2565677173 rad
∠ B' = β' = 120.6998893733° = 120°41'56″ = 1.03549995544 rad
∠ C' = γ' = 73.95503291958° = 73°57'1″ = 1.85109159262 rad
Calculate another triangle
How did we calculate this triangle?
Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.
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

6. Inradius

7. Circumradius
