15 19 19 triangle

Acute isosceles triangle.

Sides: a = 15   b = 19   c = 19

Area: T = 130.9288176876
Perimeter: p = 53
Semiperimeter: s = 26.5

Angle ∠ A = α = 46.49991251812° = 46°29'57″ = 0.81215628337 rad
Angle ∠ B = β = 66.75504374094° = 66°45'2″ = 1.16550149099 rad
Angle ∠ C = γ = 66.75504374094° = 66°45'2″ = 1.16550149099 rad

Height: ha = 17.45770902501
Height: hb = 13.78219133553
Height: hc = 13.78219133553

Median: ma = 17.45770902501
Median: mb = 14.23990308659
Median: mc = 14.23990308659

Inradius: r = 4.94106859198
Circumradius: R = 10.34396383598

Vertex coordinates: A[19; 0] B[0; 0] C[5.92110526316; 13.78219133553]
Centroid: CG[8.30770175439; 4.59439711184]
Coordinates of the circumscribed circle: U[9.5; 4.08114361946]
Coordinates of the inscribed circle: I[7.5; 4.94106859198]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 133.5010874819° = 133°30'3″ = 0.81215628337 rad
∠ B' = β' = 113.2549562591° = 113°14'58″ = 1.16550149099 rad
∠ C' = γ' = 113.2549562591° = 113°14'58″ = 1.16550149099 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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