12 15 24 triangle

Obtuse scalene triangle.

Sides: a = 12   b = 15   c = 24

Area: T = 73.63438067738
Perimeter: p = 51
Semiperimeter: s = 25.5

Angle ∠ A = α = 24.14768479965° = 24°8'49″ = 0.42114420015 rad
Angle ∠ B = β = 30.75435198081° = 30°45'13″ = 0.53767501772 rad
Angle ∠ C = γ = 125.1099632195° = 125°5'59″ = 2.18334004748 rad

Height: ha = 12.2722301129
Height: hb = 9.81878409032
Height: hc = 6.13661505645

Median: ma = 19.0921883092
Median: mb = 17.42884250579
Median: mc = 6.36439610307

Inradius: r = 2.88876002656
Circumradius: R = 14.66771759525

Vertex coordinates: A[24; 0] B[0; 0] C[10.31325; 6.13661505645]
Centroid: CG[11.43875; 2.04553835215]
Coordinates of the circumscribed circle: U[12; -8.43436261727]
Coordinates of the inscribed circle: I[10.5; 2.88876002656]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155.8533152003° = 155°51'11″ = 0.42114420015 rad
∠ B' = β' = 149.2466480192° = 149°14'47″ = 0.53767501772 rad
∠ C' = γ' = 54.99003678046° = 54°54'1″ = 2.18334004748 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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