5.39 7.07 6.4 triangle

Acute scalene triangle.

Sides: a = 5.39   b = 7.07   c = 6.4

Area: T = 16.50553160454
Perimeter: p = 18.86
Semiperimeter: s = 9.43

Angle ∠ A = α = 46.84985964847° = 46°50'55″ = 0.81876622586 rad
Angle ∠ B = β = 73.12551045339° = 73°7'30″ = 1.276627384 rad
Angle ∠ C = γ = 60.02662989814° = 60°1'35″ = 1.0487656555 rad

Height: ha = 6.12444215382
Height: hb = 4.66991134499
Height: hc = 5.15879112642

Median: ma = 6.18113772737
Median: mb = 4.74444520232
Median: mc = 5.41109610976

Inradius: r = 1.75502986262
Circumradius: R = 3.69440631632

Vertex coordinates: A[6.4; 0] B[0; 0] C[1.5654625; 5.15879112642]
Centroid: CG[2.6554875; 1.71993037547]
Coordinates of the circumscribed circle: U[3.2; 1.84655629638]
Coordinates of the inscribed circle: I[2.36; 1.75502986262]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 133.1511403515° = 133°9'5″ = 0.81876622586 rad
∠ B' = β' = 106.8754895466° = 106°52'30″ = 1.276627384 rad
∠ C' = γ' = 119.9743701019° = 119°58'25″ = 1.0487656555 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     