7 20 22 triangle

Obtuse scalene triangle.

Sides: a = 7   b = 20   c = 22

Area: T = 69.45109719154
Perimeter: p = 49
Semiperimeter: s = 24.5

Angle ∠ A = α = 18.40222461959° = 18°24'8″ = 0.32111797859 rad
Angle ∠ B = β = 64.41769980226° = 64°25'1″ = 1.12442887097 rad
Angle ∠ C = γ = 97.18107557815° = 97°10'51″ = 1.6966124158 rad

Height: ha = 19.8433134833
Height: hb = 6.94550971915
Height: hc = 6.31437247196

Median: ma = 20.73304124416
Median: mb = 12.90334879006
Median: mc = 10.17334949747

Inradius: r = 2.83547335476
Circumradius: R = 11.08769578749

Vertex coordinates: A[22; 0] B[0; 0] C[3.02327272727; 6.31437247196]
Centroid: CG[8.34109090909; 2.10545749065]
Coordinates of the circumscribed circle: U[11; -1.38658697344]
Coordinates of the inscribed circle: I[4.5; 2.83547335476]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 161.5987753804° = 161°35'52″ = 0.32111797859 rad
∠ B' = β' = 115.5833001977° = 115°34'59″ = 1.12442887097 rad
∠ C' = γ' = 82.81992442185° = 82°49'9″ = 1.6966124158 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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