Answer:
Acute scalene triangle.
Sides: a = 6 b = 8 c = 9
Area: T = 23.525
Perimeter: p = 23
Semiperimeter: s = 11.5
Angle ∠ A = α = 40.804° = 40°48'16″ = 0.712 rad
Angle ∠ B = β = 60.611° = 60°36'39″ = 1.058 rad
Angle ∠ C = γ = 78.585° = 78°35'5″ = 1.372 rad
Height: ha = 7.842
Height: hb = 5.881
Height: hc = 5.228
Median: ma = 7.969
Median: mb = 6.519
Median: mc = 5.454
Inradius: r = 2.046
Circumradius: R = 4.591
Vertex coordinates: A[9; 0] B[0; 0] C[2.944; 5.228]
Centroid: CG[3.981; 1.743]
Coordinates of the circumscribed circle: U[4.5; 0.909]
Coordinates of the inscribed circle: I[3.5; 2.046]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 139.196° = 139°11'44″ = 0.712 rad
∠ B' = β' = 119.389° = 119°23'21″ = 1.058 rad
∠ C' = γ' = 101.415° = 101°24'55″ = 1.372 rad
Hope This Helps! Have A Nice Day!!
