12 17 23 triangle

Obtuse scalene triangle.

Sides: a = 12   b = 17   c = 23

Area: T = 99.13662698511
Perimeter: p = 52
Semiperimeter: s = 26

Angle ∠ A = α = 30.47702492171° = 30°28'13″ = 0.53218061727 rad
Angle ∠ B = β = 45.92107901521° = 45°55'15″ = 0.80114689833 rad
Angle ∠ C = γ = 103.6098960631° = 103°36'32″ = 1.80883174976 rad

Height: ha = 16.52327116419
Height: hb = 11.66330905707
Height: hc = 8.62105452044

Median: ma = 19.31332079158
Median: mb = 16.2565768207
Median: mc = 9.17987798753

Inradius: r = 3.81329334558
Circumradius: R = 11.83221982637

Vertex coordinates: A[23; 0] B[0; 0] C[8.3487826087; 8.62105452044]
Centroid: CG[10.44992753623; 2.87435150681]
Coordinates of the circumscribed circle: U[11.5; -2.78440466503]
Coordinates of the inscribed circle: I[9; 3.81329334558]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 149.5329750783° = 149°31'47″ = 0.53218061727 rad
∠ B' = β' = 134.0799209848° = 134°4'45″ = 0.80114689833 rad
∠ C' = γ' = 76.39110393692° = 76°23'28″ = 1.80883174976 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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