Area: T = 44.98998886413 Perimeter: p = 42 Semiperimeter: s = 21
Angle ∠ A = α = 20.20552235834° = 20°12'19″ = 0.35326476776 rad Angle ∠ B = β = 29.92664348666° = 29°55'35″ = 0.52223148218 rad Angle ∠ C = γ = 129.868834155° = 129°52'6″ = 2.26766301542 rad
Height: ha = 9.97877530314 Height: hb = 6.90876751756 Height: hc = 4.49899888641
Median: ma = 16.2565768207 Median: mb = 14.08801278403 Median: mc = 5
Inradius: r = 2.13880899353 Circumradius: R = 13.02989855432
Vertex coordinates: A[20; 0] B[0; 0] C[7.8; 4.49899888641] Centroid: CG[9.26766666667; 1.49766629547] Coordinates of the circumscribed circle: U[10; -8.35219138098] Coordinates of the inscribed circle: I[8; 2.13880899353]
Exterior(or external, outer) angles of the triangle: ∠ A' = α' = 159.7954776417° = 159°47'41″ = 0.35326476776 rad ∠ B' = β' = 150.0743565133° = 150°4'25″ = 0.52223148218 rad ∠ C' = γ' = 50.132165845° = 50°7'54″ = 2.26766301542 rad