4.1 9.8 6.2 triangle

Obtuse scalene triangle.

Sides: a = 4.1   b = 9.8   c = 6.2

Area: T = 7.58765073486
Perimeter: p = 20.1
Semiperimeter: s = 10.05

Angle ∠ A = α = 14.46109706306° = 14°27'39″ = 0.25223915505 rad
Angle ∠ B = β = 143.3522317317° = 143°21'8″ = 2.50219699275 rad
Angle ∠ C = γ = 22.18767120525° = 22°11'12″ = 0.38772311755 rad

Height: ha = 3.7010735292
Height: hb = 1.54882668058
Height: hc = 2.4477260435

Median: ma = 7.94396158597
Median: mb = 1.90113153342
Median: mc = 6.84221487853

Inradius: r = 0.75548763531
Circumradius: R = 8.20991794206

Vertex coordinates: A[6.2; 0] B[0; 0] C[-3.2989516129; 2.4477260435]
Centroid: CG[0.97701612903; 0.81657534783]
Coordinates of the circumscribed circle: U[3.1; 7.60113569025]
Coordinates of the inscribed circle: I[0.25; 0.75548763531]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.5399029369° = 165°32'21″ = 0.25223915505 rad
∠ B' = β' = 36.64876826831° = 36°38'52″ = 2.50219699275 rad
∠ C' = γ' = 157.8133287947° = 157°48'48″ = 0.38772311755 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     