1 5 5 triangle

Acute isosceles triangle.

Sides: a = 1   b = 5   c = 5

Area: T = 2.48774685928
Perimeter: p = 11
Semiperimeter: s = 5.5

Angle ∠ A = α = 11.47883409545° = 11°28'42″ = 0.22003348423 rad
Angle ∠ B = β = 84.26108295227° = 84°15'39″ = 1.47106289056 rad
Angle ∠ C = γ = 84.26108295227° = 84°15'39″ = 1.47106289056 rad

Height: ha = 4.97549371855
Height: hb = 0.99549874371
Height: hc = 0.99549874371

Median: ma = 4.97549371855
Median: mb = 2.59880762114
Median: mc = 2.59880762114

Inradius: r = 0.45222670169
Circumradius: R = 2.51325945381

Vertex coordinates: A[5; 0] B[0; 0] C[0.1; 0.99549874371]
Centroid: CG[1.7; 0.3321662479]
Coordinates of the circumscribed circle: U[2.5; 0.25112594538]
Coordinates of the inscribed circle: I[0.5; 0.45222670169]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 168.5221659045° = 168°31'18″ = 0.22003348423 rad
∠ B' = β' = 95.73991704773° = 95°44'21″ = 1.47106289056 rad
∠ C' = γ' = 95.73991704773° = 95°44'21″ = 1.47106289056 rad

Calculate another triangle




How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.


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