1.6 3.3 2.6 triangle

Obtuse scalene triangle.

Sides: a = 1.6   b = 3.3   c = 2.6

Area: T = 2.04326315747
Perimeter: p = 7.5
Semiperimeter: s = 3.75

Angle ∠ A = α = 28.43334642212° = 28°26' = 0.49662575684 rad
Angle ∠ B = β = 100.8777039604° = 100°52'37″ = 1.76106364808 rad
Angle ∠ C = γ = 50.68994961747° = 50°41'22″ = 0.88546986044 rad

Height: ha = 2.55332894684
Height: hb = 1.23879585301
Height: hc = 1.57112550575

Median: ma = 2.86109439002
Median: mb = 1.39219410907
Median: mc = 2.24438805672

Inradius: r = 0.54547017533
Circumradius: R = 1.68801855227

Vertex coordinates: A[2.6; 0] B[0; 0] C[-0.30219230769; 1.57112550575]
Centroid: CG[0.7666025641; 0.52437516858]
Coordinates of the circumscribed circle: U[1.3; 1.06444357147]
Coordinates of the inscribed circle: I[0.45; 0.54547017533]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 151.5676535779° = 151°34' = 0.49662575684 rad
∠ B' = β' = 79.12329603959° = 79°7'23″ = 1.76106364808 rad
∠ C' = γ' = 129.3110503825° = 129°18'38″ = 0.88546986044 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     