Triangle calculator VC

Please enter the coordinates of the three vertices


Acute isosceles triangle.

Sides: a = 2.77704592904   b = 2.77704592904   c = 3.46441016151

Area: T = 3.74551747675
Perimeter: p = 9.00550201959
Semiperimeter: s = 4.5032510098

Angle ∠ A = α = 51.30442005258° = 51°18'15″ = 0.89554272193 rad
Angle ∠ B = β = 51.30442005258° = 51°18'15″ = 0.89554272193 rad
Angle ∠ C = γ = 77.39215989484° = 77°23'30″ = 1.3510738215 rad

Height: ha = 2.70436490162
Height: hb = 2.70436490162
Height: hc = 2.16222776602

Median: ma = 2.81440471158
Median: mb = 2.81440471158
Median: mc = 2.16222776602

Inradius: r = 0.83217970834
Circumradius: R = 1.77548517734

Vertex coordinates: A[1.73205080757; 1] B[-1.73205080757; 1] C[0; 3.16227766017]
Centroid: CG[0; 1.72107592201]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[0.66662950076; 0.83217970834]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 128.6965799474° = 128°41'45″ = 0.89554272193 rad
∠ B' = β' = 128.6965799474° = 128°41'45″ = 0.89554272193 rad
∠ C' = γ' = 102.6088401052° = 102°36'30″ = 1.3510738215 rad

Calculate another triangle




How did we calculate this triangle?

1. We compute side a from coordinates using the Pythagorean theorem


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