100 210 160 triangle

Obtuse scalene triangle.

Sides: a = 100   b = 210   c = 160

Area: T = 7712.611142545
Perimeter: p = 470
Semiperimeter: s = 235

Angle ∠ A = α = 27.32880163439° = 27°19'41″ = 0.47769638632 rad
Angle ∠ B = β = 105.4044093699° = 105°24'15″ = 1.84396484801 rad
Angle ∠ C = γ = 47.26878899574° = 47°16'4″ = 0.82549803102 rad

Height: ha = 154.2522228509
Height: hb = 73.45334421472
Height: hc = 96.40876428181

Median: ma = 179.8611057486
Median: mb = 82.31103881658
Median: mc = 143.7011078632

Inradius: r = 32.8219623087
Circumradius: R = 108.9132526985

Vertex coordinates: A[160; 0] B[0; 0] C[-26.56325; 96.40876428181]
Centroid: CG[44.47991666667; 32.13658809394]
Coordinates of the circumscribed circle: U[80; 73.90549290256]
Coordinates of the inscribed circle: I[25; 32.8219623087]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 152.6721983656° = 152°40'19″ = 0.47769638632 rad
∠ B' = β' = 74.59659063013° = 74°35'45″ = 1.84396484801 rad
∠ C' = γ' = 132.7322110043° = 132°43'56″ = 0.82549803102 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     