19 21 26 triangle

Acute scalene triangle.

Sides: a = 19   b = 21   c = 26

Area: T = 196.9977461913
Perimeter: p = 66
Semiperimeter: s = 33

Angle ∠ A = α = 46.18769385396° = 46°11'13″ = 0.80661141489 rad
Angle ∠ B = β = 52.89877817478° = 52°53'52″ = 0.92332404585 rad
Angle ∠ C = γ = 80.91552797126° = 80°54'55″ = 1.41222380462 rad

Height: ha = 20.73765749382
Height: hb = 18.76216630393
Height: hc = 15.15436509164

Median: ma = 21.63990850084
Median: mb = 20.20551973512
Median: mc = 15.23215462117

Inradius: r = 5.9769620058
Circumradius: R = 13.1655144235

Vertex coordinates: A[26; 0] B[0; 0] C[11.46215384615; 15.15436509164]
Centroid: CG[12.48771794872; 5.05112169721]
Coordinates of the circumscribed circle: U[13; 2.07987069845]
Coordinates of the inscribed circle: I[12; 5.9769620058]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 133.813306146° = 133°48'47″ = 0.80661141489 rad
∠ B' = β' = 127.1022218252° = 127°6'8″ = 0.92332404585 rad
∠ C' = γ' = 99.08547202874° = 99°5'5″ = 1.41222380462 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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