Triangle calculator VC

Please enter the coordinates of the three vertices


Acute scalene triangle.

Sides: a = 6.70882039325   b = 5.09990195136   c = 7.28801098893

Area: T = 16.5
Perimeter: p = 19.08773333354
Semiperimeter: s = 9.54436666677

Angle ∠ A = α = 62.74546716251° = 62°44'41″ = 1.09551011079 rad
Angle ∠ B = β = 42.5110447078° = 42°30'38″ = 0.7421947268 rad
Angle ∠ C = γ = 74.74548812969° = 74°44'42″ = 1.30545442776 rad

Height: ha = 4.91993495505
Height: hb = 6.47218324596
Height: hc = 4.53328986103

Median: ma = 5.31550729064
Median: mb = 6.51992024052
Median: mc = 4.7176990566

Inradius: r = 1.72988952532
Circumradius: R = 3.77330010854

Vertex coordinates: A[-2; -2] B[0; 5] C[3; -1]
Centroid: CG[0.33333333333; 0.66766666667]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[1.8866067549; 1.72988952532]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 117.2555328375° = 117°15'19″ = 1.09551011079 rad
∠ B' = β' = 137.4989552922° = 137°29'22″ = 0.7421947268 rad
∠ C' = γ' = 105.2555118703° = 105°15'18″ = 1.30545442776 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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