9 21 24 triangle

Obtuse scalene triangle.

Sides: a = 9   b = 21   c = 24

Area: T = 93.53107436087
Perimeter: p = 54
Semiperimeter: s = 27

Angle ∠ A = α = 21.78767892983° = 21°47'12″ = 0.38802512067 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 98.21332107017° = 98°12'48″ = 1.71441438957 rad

Height: ha = 20.78546096908
Height: hb = 8.90876898675
Height: hc = 7.79442286341

Median: ma = 22.0966379794
Median: mb = 14.77332867027
Median: mc = 10.81766538264

Inradius: r = 3.46441016151
Circumradius: R = 12.1244355653

Vertex coordinates: A[24; 0] B[0; 0] C[4.5; 7.79442286341]
Centroid: CG[9.5; 2.59880762114]
Coordinates of the circumscribed circle: U[12; -1.73220508076]
Coordinates of the inscribed circle: I[6; 3.46441016151]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 158.2133210702° = 158°12'48″ = 0.38802512067 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 81.78767892983° = 81°47'12″ = 1.71441438957 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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