Triangle calculator VC

Please enter the coordinates of the three vertices


Acute scalene triangle.

Sides: a = 6.32545553203   b = 11.18803398875   c = 9.84988578018

Area: T = 31
Perimeter: p = 27.35437530096
Semiperimeter: s = 13.67768765048

Angle ∠ A = α = 34.26773354433° = 34°16'2″ = 0.59880778294 rad
Angle ∠ B = β = 84.47224598483° = 84°28'21″ = 1.47443225516 rad
Angle ∠ C = γ = 61.26602047083° = 61°15'37″ = 1.06991922726 rad

Height: ha = 9.80330607465
Height: hb = 5.54554485842
Height: hc = 6.29551462238

Median: ma = 10.05498756211
Median: mb = 6.10332778079
Median: mc = 7.63221687612

Inradius: r = 2.26765993942
Circumradius: R = 5.61662855956

Vertex coordinates: A[0; -3] B[-4; 6] C[2; 8]
Centroid: CG[-0.66766666667; 3.66766666667]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[0.21993483285; 2.26765993942]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 145.7332664557° = 145°43'58″ = 0.59880778294 rad
∠ B' = β' = 95.52875401517° = 95°31'39″ = 1.47443225516 rad
∠ C' = γ' = 118.7439795292° = 118°44'23″ = 1.06991922726 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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