Is the triangle that has the side lengths of a=5, b=7, c=9 a right triangle

Sides: a = 5 b = 7 c = 9

Area: T = 17.412

Perimeter: p = 21

Semiperimeter: s = 10.5

Angle ∠ A = α = 33.557° = 33°33'26″ = 0.586 rad

Angle ∠ B = β = 50.704° = 50°42'13″ = 0.885 rad

Angle ∠ C = γ = 95.739° = 95°44'21″ = 1.671 rad

Height: ha = 6.965

Height: hb = 4.975

Height: hc = 3.869

Median: ma = 7.665

Median: mb = 6.384

Median: mc = 4.093

Inradius: r = 1.658

Circumradius: R = 4.523

Vertex coordinates: A[9; 0] B[0; 0] C[3.167; 3.869]

Centroid: CG[4.056; 1.29]

Coordinates of the circumscribed circle: U[4.5; - 0.452]

Coordinates of the inscribed circle: I[3.5; 1.658]

Exterior (or external, outer) angles of the triangle:

∠ A' = α' = 146.443° = 146°26'34″ = 0.586 rad

∠ B' = β' = 129.296° = 129°17'47″ = 0.885 rad

∠ C' = γ' = 84.261° = 84°15'39″ = 1.671 rad