12 28 29 triangle

Acute scalene triangle.

Sides: a = 12   b = 28   c = 29

Area: T = 166.5866126373
Perimeter: p = 69
Semiperimeter: s = 34.5

Angle ∠ A = α = 24.22443512236° = 24°13'28″ = 0.4232794688 rad
Angle ∠ B = β = 73.214428532° = 73°12'51″ = 1.27878303383 rad
Angle ∠ C = γ = 82.56113634564° = 82°33'41″ = 1.44109676273 rad

Height: ha = 27.76443543955
Height: hb = 11.89990090267
Height: hc = 11.48986983706

Median: ma = 27.86657495862
Median: mb = 17.21991753577
Median: mc = 15.93295323221

Inradius: r = 4.82985833731
Circumradius: R = 14.62330664764

Vertex coordinates: A[29; 0] B[0; 0] C[3.46655172414; 11.48986983706]
Centroid: CG[10.82218390805; 3.83295661235]
Coordinates of the circumscribed circle: U[14.5; 1.89331648563]
Coordinates of the inscribed circle: I[6.5; 4.82985833731]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155.7765648776° = 155°46'32″ = 0.4232794688 rad
∠ B' = β' = 106.786571468° = 106°47'9″ = 1.27878303383 rad
∠ C' = γ' = 97.43986365436° = 97°26'19″ = 1.44109676273 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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