6 17 21 triangle

Obtuse scalene triangle.

Sides: a = 6   b = 17   c = 21

Area: T = 41.95223539268
Perimeter: p = 44
Semiperimeter: s = 22

Angle ∠ A = α = 13.59332257052° = 13°35'36″ = 0.23772465445 rad
Angle ∠ B = β = 41.7522205202° = 41°45'8″ = 0.72987134507 rad
Angle ∠ C = γ = 124.6554569093° = 124°39'16″ = 2.17656326583 rad

Height: ha = 13.98441179756
Height: hb = 4.93655710502
Height: hc = 3.99554622787

Median: ma = 18.86879622641
Median: mb = 12.89437969582
Median: mc = 7.22884161474

Inradius: r = 1.90769251785
Circumradius: R = 12.76444804135

Vertex coordinates: A[21; 0] B[0; 0] C[4.47661904762; 3.99554622787]
Centroid: CG[8.49220634921; 1.33218207596]
Coordinates of the circumscribed circle: U[10.5; -7.25882339606]
Coordinates of the inscribed circle: I[5; 1.90769251785]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 166.4076774295° = 166°24'24″ = 0.23772465445 rad
∠ B' = β' = 138.2487794798° = 138°14'52″ = 0.72987134507 rad
∠ C' = γ' = 55.34554309073° = 55°20'44″ = 2.17656326583 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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