9 19 19 triangle

Acute isosceles triangle.

Sides: a = 9   b = 19   c = 19

Area: T = 83.06773672389
Perimeter: p = 47
Semiperimeter: s = 23.5

Angle ∠ A = α = 27.44004669767° = 27°24'2″ = 0.47882283653 rad
Angle ∠ B = β = 76.32997665116° = 76°17'59″ = 1.33216821441 rad
Angle ∠ C = γ = 76.32997665116° = 76°17'59″ = 1.33216821441 rad

Height: ha = 18.4599414942
Height: hb = 8.74439333936
Height: hc = 8.74439333936

Median: ma = 18.4599414942
Median: mb = 11.4354596626
Median: mc = 11.4354596626

Inradius: r = 3.53547815846
Circumradius: R = 9.77882080617

Vertex coordinates: A[19; 0] B[0; 0] C[2.13215789474; 8.74439333936]
Centroid: CG[7.04438596491; 2.91546444645]
Coordinates of the circumscribed circle: U[9.5; 2.3165891383]
Coordinates of the inscribed circle: I[4.5; 3.53547815846]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 152.6599533023° = 152°35'58″ = 0.47882283653 rad
∠ B' = β' = 103.7700233488° = 103°42'1″ = 1.33216821441 rad
∠ C' = γ' = 103.7700233488° = 103°42'1″ = 1.33216821441 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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