# 8 23 26 triangle

### Obtuse scalene triangle.

Sides: a = 8   b = 23   c = 26

Area: T = 89.62994454964
Perimeter: p = 57
Semiperimeter: s = 28.5

Angle ∠ A = α = 17.44334308804° = 17°26'36″ = 0.30444453017 rad
Angle ∠ B = β = 59.52217304315° = 59°31'18″ = 1.03988501725 rad
Angle ∠ C = γ = 103.0354838688° = 103°2'5″ = 1.79882971794 rad

Height: ha = 22.40773613741
Height: hb = 7.79438648258
Height: hc = 6.89545727305

Median: ma = 24.21877620766
Median: mb = 15.41991439451
Median: mc = 11.29215897906

Inradius: r = 3.14548928244
Circumradius: R = 13.34438290662

Vertex coordinates: A[26; 0] B[0; 0] C[4.05876923077; 6.89545727305]
Centroid: CG[10.01992307692; 2.29881909102]
Coordinates of the circumscribed circle: U[13; -3.01096136209]
Coordinates of the inscribed circle: I[5.5; 3.14548928244]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 162.557656912° = 162°33'24″ = 0.30444453017 rad
∠ B' = β' = 120.4788269569° = 120°28'42″ = 1.03988501725 rad
∠ C' = γ' = 76.96551613118° = 76°57'55″ = 1.79882971794 rad

# 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.

### 8. Calculation of medians

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