18 22 26 triangle

Acute scalene triangle.

Sides: a = 18   b = 22   c = 26

Area: T = 195.2310632842
Perimeter: p = 66
Semiperimeter: s = 33

Angle ∠ A = α = 43.04990798002° = 43°2'57″ = 0.75113481825 rad
Angle ∠ B = β = 56.54549884266° = 56°32'42″ = 0.98768962235 rad
Angle ∠ C = γ = 80.40659317731° = 80°24'21″ = 1.40333482476 rad

Height: ha = 21.6922292538
Height: hb = 17.74882393493
Height: hc = 15.01877409879

Median: ma = 22.33883079037
Median: mb = 19.46879223339
Median: mc = 15.33297097168

Inradius: r = 5.91660797831
Circumradius: R = 13.18444063738

Vertex coordinates: A[26; 0] B[0; 0] C[9.92330769231; 15.01877409879]
Centroid: CG[11.97443589744; 5.00659136626]
Coordinates of the circumscribed circle: U[13; 2.19774010623]
Coordinates of the inscribed circle: I[11; 5.91660797831]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 136.95109202° = 136°57'3″ = 0.75113481825 rad
∠ B' = β' = 123.4555011573° = 123°27'18″ = 0.98768962235 rad
∠ C' = γ' = 99.59440682269° = 99°35'39″ = 1.40333482476 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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