1.86 2.78 3.71 triangle

Obtuse scalene triangle.

Sides: a = 1.86   b = 2.78   c = 3.71

Area: T = 2.50439019468
Perimeter: p = 8.35
Semiperimeter: s = 4.175

Angle ∠ A = α = 29.0488121141° = 29°2'53″ = 0.50769853554 rad
Angle ∠ B = β = 46.52875750737° = 46°31'39″ = 0.8122059378 rad
Angle ∠ C = γ = 104.4244303785° = 104°25'27″ = 1.82325479202 rad

Height: ha = 2.69223676848
Height: hb = 1.80113683071
Height: hc = 1.35498123703

Median: ma = 3.14334614679
Median: mb = 2.58545212323
Median: mc = 1.46773019457

Inradius: r = 0.65997369933
Circumradius: R = 1.91553773198

Vertex coordinates: A[3.71; 0] B[0; 0] C[1.2879690027; 1.35498123703]
Centroid: CG[1.6633230009; 0.45499374568]
Coordinates of the circumscribed circle: U[1.855; -0.47771218683]
Coordinates of the inscribed circle: I[1.395; 0.65997369933]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.9521878859° = 150°57'7″ = 0.50769853554 rad
∠ B' = β' = 133.4722424926° = 133°28'21″ = 0.8122059378 rad
∠ C' = γ' = 75.57656962147° = 75°34'33″ = 1.82325479202 rad

How did we calculate this triangle?

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     