5 12 16 triangle

Obtuse scalene triangle.

Sides: a = 5   b = 12   c = 16

Area: T = 20.66224659709
Perimeter: p = 33
Semiperimeter: s = 16.5

Angle ∠ A = α = 12.42992571325° = 12°25'45″ = 0.21769314605 rad
Angle ∠ B = β = 31.10218950348° = 31°6'7″ = 0.5432830472 rad
Angle ∠ C = γ = 136.4698847833° = 136°28'8″ = 2.38218307211 rad

Height: ha = 8.26549863884
Height: hb = 3.44437443285
Height: hc = 2.58328082464

Median: ma = 13.91994109071
Median: mb = 10.22325241501
Median: mc = 4.52876925691

Inradius: r = 1.25222706649
Circumradius: R = 11.61552641383

Vertex coordinates: A[16; 0] B[0; 0] C[4.281125; 2.58328082464]
Centroid: CG[6.76604166667; 0.86109360821]
Coordinates of the circumscribed circle: U[8; -8.42110665002]
Coordinates of the inscribed circle: I[4.5; 1.25222706649]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 167.5710742867° = 167°34'15″ = 0.21769314605 rad
∠ B' = β' = 148.8988104965° = 148°53'53″ = 0.5432830472 rad
∠ C' = γ' = 43.53111521674° = 43°31'52″ = 2.38218307211 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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