#1 Obtuse scalene triangle.

Sides: a = 4000   b = 1450   c = 5387.486622832

Area: T = 976563.5555305
Perimeter: p = 10837.48662283
Semiperimeter: s = 5418.743311416

Angle ∠ A = α = 14.47987495877° = 14°28'44″ = 0.25327018519 rad
Angle ∠ B = β = 5.2° = 5°12' = 0.09107571211 rad
Angle ∠ C = γ = 160.3211250412° = 160°19'17″ = 2.79881336806 rad

Height: h_a = 488.2821777653
Height: h_b = 1346.984421421
Height: h_c = 362.5330320791

Median: m_a = 3400.552200374
Median: m_b = 4689.017684047
Median: m_c = 1339.775536733

Inradius: r = 180.2219570246
Circumradius: R = 7999.331090747

Vertex coordinates: A[5387.486622832; 0] B[0; 0] C[3983.538759446; 362.5330320791]
Centroid: CG[3123.675460759; 120.8433440264]
Coordinates of the circumscribed circle: U[2693.743311416; -7532.13440271]
Coordinates of the inscribed circle: I[3968.743311416; 180.2219570246]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.5211250412° = 165°31'17″ = 0.25327018519 rad
∠ B' = β' = 174.8° = 174°48' = 0.09107571211 rad
∠ C' = γ' = 19.67987495877° = 19°40'43″ = 2.79881336806 rad