Obtuse scalene triangle.

Sides: a = 6   b = 15   c = 17

Area: T = 44.45222215418
Perimeter: p = 38
Semiperimeter: s = 19

Angle ∠ A = α = 20.40444519895° = 20°24'16″ = 0.35661248693 rad
Angle ∠ B = β = 60.64765299452° = 60°38'48″ = 1.05884816275 rad
Angle ∠ C = γ = 98.94990180653° = 98°56'56″ = 1.72769861569 rad

Height: h_a = 14.81774071806
Height: h_b = 5.92769628722
Height: h_c = 5.23296731226

Median: m_a = 15.7488015748
Median: m_b = 10.3087764064
Median: m_c = 7.63221687612

Inradius: r = 2.34395906075
Circumradius: R = 8.60547443015

Vertex coordinates: A[17; 0] B[0; 0] C[2.94111764706; 5.23296731226]
Centroid: CG[6.64770588235; 1.74332243742]
Coordinates of the circumscribed circle: U[8.5; -1.33985157802]
Coordinates of the inscribed circle: I[4; 2.34395906075]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.596554801° = 159°35'44″ = 0.35661248693 rad
∠ B' = β' = 119.3533470055° = 119°21'12″ = 1.05884816275 rad
∠ C' = γ' = 81.05109819347° = 81°3'4″ = 1.72769861569 rad

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