2 19 20 triangle

Obtuse scalene triangle.

Sides: a = 2   b = 19   c = 20

Area: T = 16.86552749755
Perimeter: p = 41
Semiperimeter: s = 20.5

Angle ∠ A = α = 5.09325397195° = 5°5'33″ = 0.08988815854 rad
Angle ∠ B = β = 57.48663853668° = 57°29'11″ = 1.00333266997 rad
Angle ∠ C = γ = 117.4211074914° = 117°25'16″ = 2.04993843685 rad

Height: ha = 16.86552749755
Height: hb = 1.77552921027
Height: hc = 1.68765274976

Median: ma = 19.48107597388
Median: mb = 10.57111872559
Median: mc = 9.08329510623

Inradius: r = 0.82326963403
Circumradius: R = 11.26657516866

Vertex coordinates: A[20; 0] B[0; 0] C[1.075; 1.68765274976]
Centroid: CG[7.025; 0.56221758325]
Coordinates of the circumscribed circle: U[10; -5.18881751188]
Coordinates of the inscribed circle: I[1.5; 0.82326963403]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 174.907746028° = 174°54'27″ = 0.08988815854 rad
∠ B' = β' = 122.5143614633° = 122°30'49″ = 1.00333266997 rad
∠ C' = γ' = 62.57989250863° = 62°34'44″ = 2.04993843685 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.


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