8 18 25 triangle

Obtuse scalene triangle.

Sides: a = 8   b = 18   c = 25

Area: T = 40.90876704299
Perimeter: p = 51
Semiperimeter: s = 25.5

Angle ∠ A = α = 10.47553138432° = 10°28'31″ = 0.18328287167 rad
Angle ∠ B = β = 24.14768479965° = 24°8'49″ = 0.42114420015 rad
Angle ∠ C = γ = 145.378783816° = 145°22'40″ = 2.53773219353 rad

Height: ha = 10.22769176075
Height: hb = 4.54552967144
Height: hc = 3.27326136344

Median: ma = 21.41326131054
Median: mb = 16.23326830807
Median: mc = 6.14441028637

Inradius: r = 1.60442223698
Circumradius: R = 22.00107639287

Vertex coordinates: A[25; 0] B[0; 0] C[7.3; 3.27326136344]
Centroid: CG[10.76766666667; 1.09108712115]
Coordinates of the circumscribed circle: U[12.5; -18.10547953163]
Coordinates of the inscribed circle: I[7.5; 1.60442223698]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 169.5254686157° = 169°31'29″ = 0.18328287167 rad
∠ B' = β' = 155.8533152003° = 155°51'11″ = 0.42114420015 rad
∠ C' = γ' = 34.62221618397° = 34°37'20″ = 2.53773219353 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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