Area: T = 61.79875525405 Perimeter: p = 43 Semiperimeter: s = 21.5
Angle ∠ A = α = 22.42545428353° = 22°25'28″ = 0.39113821057 rad Angle ∠ B = β = 78.78877285824° = 78°47'16″ = 1.37551052739 rad Angle ∠ C = γ = 78.78877285824° = 78°47'16″ = 1.37551052739 rad
Height: ha = 17.6566443583 Height: hb = 6.86663947267 Height: hc = 6.86663947267
Median: ma = 17.6566443583 Median: mb = 10.27113192921 Median: mc = 10.27113192921
Inradius: r = 2.87443047693 Circumradius: R = 9.1755120643
Vertex coordinates: A[18; 0] B[0; 0] C[1.36111111111; 6.86663947267] Centroid: CG[6.45437037037; 2.28987982422] Coordinates of the circumscribed circle: U[9; 1.78440512361] Coordinates of the inscribed circle: I[3.5; 2.87443047693]
Exterior(or external, outer) angles of the triangle: ∠ A' = α' = 157.5755457165° = 157°34'32″ = 0.39113821057 rad ∠ B' = β' = 101.2122271418° = 101°12'44″ = 1.37551052739 rad ∠ C' = γ' = 101.2122271418° = 101°12'44″ = 1.37551052739 rad