Area: T = 72.4721977343 Perimeter: p = 49 Semiperimeter: s = 24.5
Angle ∠ A = α = 19.18881364537° = 19°11'17″ = 0.33548961584 rad Angle ∠ B = β = 80.40659317731° = 80°24'21″ = 1.40333482476 rad Angle ∠ C = γ = 80.40659317731° = 80°24'21″ = 1.40333482476 rad
Height: ha = 20.70662792408 Height: hb = 6.90220930803 Height: hc = 6.90220930803
Median: ma = 20.70662792408 Median: mb = 11.60881867662 Median: mc = 11.60881867662
Inradius: r = 2.95880398915 Circumradius: R = 10.64989436096
Vertex coordinates: A[21; 0] B[0; 0] C[1.16766666667; 6.90220930803] Centroid: CG[7.38988888889; 2.30106976934] Coordinates of the circumscribed circle: U[10.5; 1.77548239349] Coordinates of the inscribed circle: I[3.5; 2.95880398915]
Exterior(or external, outer) angles of the triangle: ∠ A' = α' = 160.8121863546° = 160°48'43″ = 0.33548961584 rad ∠ B' = β' = 99.59440682269° = 99°35'39″ = 1.40333482476 rad ∠ C' = γ' = 99.59440682269° = 99°35'39″ = 1.40333482476 rad