14 21 30 triangle

Obtuse scalene triangle.

Sides: a = 14   b = 21   c = 30

Area: T = 131.4765995908
Perimeter: p = 65
Semiperimeter: s = 32.5

Angle ∠ A = α = 24.67695454829° = 24°40'10″ = 0.43105647936 rad
Angle ∠ B = β = 38.76112192061° = 38°45'40″ = 0.67765108972 rad
Angle ∠ C = γ = 116.5699235311° = 116°34'9″ = 2.03545169627 rad

Height: ha = 18.78222851297
Height: hb = 12.52215234198
Height: hc = 8.76550663939

Median: ma = 24.93299017246
Median: mb = 20.92224759529
Median: mc = 9.67695398029

Inradius: r = 4.04554152587
Circumradius: R = 16.77111222476

Vertex coordinates: A[30; 0] B[0; 0] C[10.91766666667; 8.76550663939]
Centroid: CG[13.63988888889; 2.9221688798]
Coordinates of the circumscribed circle: U[15; -7.50113693046]
Coordinates of the inscribed circle: I[11.5; 4.04554152587]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155.3330454517° = 155°19'50″ = 0.43105647936 rad
∠ B' = β' = 141.2398780794° = 141°14'20″ = 0.67765108972 rad
∠ C' = γ' = 63.4310764689° = 63°25'51″ = 2.03545169627 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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