3 20 22 triangle

Obtuse scalene triangle.

Sides: a = 3   b = 20   c = 22

Area: T = 23.4198742494
Perimeter: p = 45
Semiperimeter: s = 22.5

Angle ∠ A = α = 6.11106462489° = 6°6'38″ = 0.10766508965 rad
Angle ∠ B = β = 45.20771662976° = 45°12'26″ = 0.78990138974 rad
Angle ∠ C = γ = 128.6822187453° = 128°40'56″ = 2.24659278597 rad

Height: ha = 15.6122494996
Height: hb = 2.34218742494
Height: hc = 2.12989765904

Median: ma = 20.97702169755
Median: mb = 12.10437184369
Median: mc = 9.13878334412

Inradius: r = 1.04108329997
Circumradius: R = 14.09112775348

Vertex coordinates: A[22; 0] B[0; 0] C[2.11436363636; 2.12989765904]
Centroid: CG[8.03878787879; 0.71096588635]
Coordinates of the circumscribed circle: U[11; -8.80770484593]
Coordinates of the inscribed circle: I[2.5; 1.04108329997]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 173.8899353751° = 173°53'22″ = 0.10766508965 rad
∠ B' = β' = 134.7932833702° = 134°47'34″ = 0.78990138974 rad
∠ C' = γ' = 51.31878125465° = 51°19'4″ = 2.24659278597 rad

Calculate another triangle




How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.


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