4 8 11 triangle

Obtuse scalene triangle.

Sides: a = 4   b = 8   c = 11

Area: T = 12.28656623753
Perimeter: p = 23
Semiperimeter: s = 11.5

Angle ∠ A = α = 16.2143633496° = 16°12'49″ = 0.28329812882 rad
Angle ∠ B = β = 33.9487926527° = 33°56'53″ = 0.59325030921 rad
Angle ∠ C = γ = 129.8388439977° = 129°50'18″ = 2.26661082733 rad

Height: ha = 6.14328311877
Height: hb = 3.07114155938
Height: hc = 2.23437567955

Median: ma = 9.40774438611
Median: mb = 7.24656883731
Median: mc = 3.12224989992

Inradius: r = 1.06883184674
Circumradius: R = 7.16328209625

Vertex coordinates: A[11; 0] B[0; 0] C[3.31881818182; 2.23437567955]
Centroid: CG[4.77327272727; 0.74545855985]
Coordinates of the circumscribed circle: U[5.5; -4.58986821791]
Coordinates of the inscribed circle: I[3.5; 1.06883184674]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 163.7866366504° = 163°47'11″ = 0.28329812882 rad
∠ B' = β' = 146.0522073473° = 146°3'7″ = 0.59325030921 rad
∠ C' = γ' = 50.1621560023° = 50°9'42″ = 2.26661082733 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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