200 180 25.12 triangle

Obtuse scalene triangle.

Sides: a = 200   b = 180   c = 25.12

Area: T = 1440.762164638
Perimeter: p = 405.12
Semiperimeter: s = 202.56

Angle ∠ A = α = 140.4110738478° = 140°24'39″ = 2.45106296916 rad
Angle ∠ B = β = 34.9988263591° = 34°59'54″ = 0.61108349321 rad
Angle ∠ C = γ = 4.59109979312° = 4°35'28″ = 0.08801280299 rad

Height: ha = 14.40876164638
Height: hb = 16.00884627376
Height: hc = 114.7110322164

Median: ma = 80.71986917634
Median: mb = 110.5243785675
Median: mc = 189.8487956007

Inradius: r = 7.11327648419
Circumradius: R = 156.9177003286

Vertex coordinates: A[25.12; 0] B[0; 0] C[163.834388535; 114.7110322164]
Centroid: CG[62.98546284501; 38.23767740547]
Coordinates of the circumscribed circle: U[12.56; 156.4143529851]
Coordinates of the inscribed circle: I[22.56; 7.11327648419]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 39.58992615221° = 39°35'21″ = 2.45106296916 rad
∠ B' = β' = 145.0021736409° = 145°6″ = 0.61108349321 rad
∠ C' = γ' = 175.4099002069° = 175°24'32″ = 0.08801280299 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     