10 26 28 triangle

Obtuse scalene triangle.

Sides: a = 10   b = 26   c = 28

Area: T = 129.9854614474
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 20.92222396826° = 20°55'20″ = 0.36551619694 rad
Angle ∠ B = β = 68.19662520106° = 68°11'47″ = 1.19902491351 rad
Angle ∠ C = γ = 90.88215083068° = 90°52'53″ = 1.58661815491 rad

Height: ha = 25.99769228948
Height: hb = 9.9998816498
Height: hc = 9.28546153196

Median: ma = 26.55218360947
Median: mb = 16.52327116419
Median: mc = 13.85664064606

Inradius: r = 4.06220192023
Circumradius: R = 14.00216570989

Vertex coordinates: A[28; 0] B[0; 0] C[3.71442857143; 9.28546153196]
Centroid: CG[10.57114285714; 3.09548717732]
Coordinates of the circumscribed circle: U[14; -0.21554101092]
Coordinates of the inscribed circle: I[6; 4.06220192023]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.0787760317° = 159°4'40″ = 0.36551619694 rad
∠ B' = β' = 111.8043747989° = 111°48'13″ = 1.19902491351 rad
∠ C' = γ' = 89.11884916932° = 89°7'7″ = 1.58661815491 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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