3.2 7.6 6.4 triangle

Obtuse scalene triangle.

Sides: a = 3.2   b = 7.6   c = 6.4

Area: T = 10.10878187558
Perimeter: p = 17.2
Semiperimeter: s = 8.6

Angle ∠ A = α = 24.55882124119° = 24°33'30″ = 0.4298621665 rad
Angle ∠ B = β = 99.2165965643° = 99°12'57″ = 1.7321645271 rad
Angle ∠ C = γ = 56.22658219451° = 56°13'33″ = 0.98113257176 rad

Height: ha = 6.31773867224
Height: hb = 2.66599523042
Height: hc = 3.15986933612

Median: ma = 6.84110525506
Median: mb = 3.34106586177
Median: mc = 4.87444230428

Inradius: r = 1.17553277623
Circumradius: R = 3.85496930881

Vertex coordinates: A[6.4; 0] B[0; 0] C[-0.51225; 3.15986933612]
Centroid: CG[1.96325; 1.05328977871]
Coordinates of the circumscribed circle: U[3.2; 2.14401254338]
Coordinates of the inscribed circle: I[1; 1.17553277623]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 155.4421787588° = 155°26'30″ = 0.4298621665 rad
∠ B' = β' = 80.7844034357° = 80°47'3″ = 1.7321645271 rad
∠ C' = γ' = 123.7744178055° = 123°46'27″ = 0.98113257176 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     