13 22 26 triangle

Obtuse scalene triangle.

Sides: a = 13   b = 22   c = 26

Area: T = 142.8844350088
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 29.97332506789° = 29°58'24″ = 0.52331319119 rad
Angle ∠ B = β = 57.72222767733° = 57°43'20″ = 1.00774437814 rad
Angle ∠ C = γ = 92.30444725478° = 92°18'16″ = 1.61110169603 rad

Height: ha = 21.98222077058
Height: hb = 12.98994863716
Height: hc = 10.99111038529

Median: ma = 23.18994372506
Median: mb = 17.36437553542
Median: mc = 12.5549900398

Inradius: r = 4.68547327898
Circumradius: R = 13.01105221381

Vertex coordinates: A[26; 0] B[0; 0] C[6.94223076923; 10.99111038529]
Centroid: CG[10.98107692308; 3.66437012843]
Coordinates of the circumscribed circle: U[13; -0.52331503657]
Coordinates of the inscribed circle: I[8.5; 4.68547327898]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.0276749321° = 150°1'36″ = 0.52331319119 rad
∠ B' = β' = 122.2787723227° = 122°16'40″ = 1.00774437814 rad
∠ C' = γ' = 87.69655274522° = 87°41'44″ = 1.61110169603 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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