16 25 30 triangle

Obtuse scalene triangle.

Sides: a = 16   b = 25   c = 30

Area: T = 199.9443585794
Perimeter: p = 71
Semiperimeter: s = 35.5

Angle ∠ A = α = 32.22107635824° = 32°13'15″ = 0.5622358412 rad
Angle ∠ B = β = 56.41883336947° = 56°25'6″ = 0.98546856815 rad
Angle ∠ C = γ = 91.36109027229° = 91°21'39″ = 1.59545485601 rad

Height: ha = 24.99329482242
Height: hb = 15.99554868635
Height: hc = 13.33295723862

Median: ma = 26.42991505728
Median: mb = 20.53765527779
Median: mc = 14.68799182559

Vertex coordinates: A[30; 0] B[0; 0] C[8.85; 13.33295723862]
Centroid: CG[12.95; 4.44331907954]
Coordinates of the circumscribed circle: U[15; -0.35663505162]
Coordinates of the inscribed circle: I[10.5; 5.63222136843]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 147.7799236418° = 147°46'45″ = 0.5622358412 rad
∠ B' = β' = 123.5821666305° = 123°34'54″ = 0.98546856815 rad
∠ C' = γ' = 88.63990972771° = 88°38'21″ = 1.59545485601 rad

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. 1. The triangle circumference is the sum of the lengths of its three sides 2. Semiperimeter of the triangle 3. The triangle area using Heron's formula 4. Calculate the heights of the triangle from its area. 5. Calculation of the inner angles of the triangle using a Law of Cosines    