10 18 26 triangle

Obtuse scalene triangle.

Sides: a = 10   b = 18   c = 26

Area: T = 64.27328558569
Perimeter: p = 54
Semiperimeter: s = 27

Angle ∠ A = α = 15.94223686056° = 15°56'33″ = 0.27882468227 rad
Angle ∠ B = β = 29.63106273936° = 29°37'50″ = 0.51771520074 rad
Angle ∠ C = γ = 134.4277004001° = 134°25'37″ = 2.34661938234 rad

Height: ha = 12.85545711714
Height: hb = 7.14114284285
Height: hc = 4.94440658351

Median: ma = 21.79444947177
Median: mb = 17.52114154679
Median: mc = 6.55774385243

Inradius: r = 2.38804761428
Circumradius: R = 18.20436410924

Vertex coordinates: A[26; 0] B[0; 0] C[8.69223076923; 4.94440658351]
Centroid: CG[11.56441025641; 1.6488021945]
Coordinates of the circumscribed circle: U[13; -12.74325487647]
Coordinates of the inscribed circle: I[9; 2.38804761428]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.0587631394° = 164°3'27″ = 0.27882468227 rad
∠ B' = β' = 150.3699372606° = 150°22'10″ = 0.51771520074 rad
∠ C' = γ' = 45.57329959992° = 45°34'23″ = 2.34661938234 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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