6 13 15 triangle

Obtuse scalene triangle.

Sides: a = 6   b = 13   c = 15

Area: T = 38.67881592116
Perimeter: p = 34
Semiperimeter: s = 17

Angle ∠ A = α = 23.37219828432° = 23°22'19″ = 0.40879180533 rad
Angle ∠ B = β = 59.26221313279° = 59°15'44″ = 1.03443193134 rad
Angle ∠ C = γ = 97.3665885829° = 97°21'57″ = 1.69993552868 rad

Height: ha = 12.89327197372
Height: hb = 5.95504860326
Height: hc = 5.15770878949

Median: ma = 13.71113092008
Median: mb = 9.3944147114
Median: mc = 6.80107352544

Inradius: r = 2.2755185836
Circumradius: R = 7.56224074662

Vertex coordinates: A[15; 0] B[0; 0] C[3.06766666667; 5.15770878949]
Centroid: CG[6.02222222222; 1.71990292983]
Coordinates of the circumscribed circle: U[7.5; -0.97695394187]
Coordinates of the inscribed circle: I[4; 2.2755185836]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 156.6288017157° = 156°37'41″ = 0.40879180533 rad
∠ B' = β' = 120.7387868672° = 120°44'16″ = 1.03443193134 rad
∠ C' = γ' = 82.6344114171° = 82°38'3″ = 1.69993552868 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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