Triangle calculator VC

Please enter the coordinates of the three vertices


Acute scalene triangle.

Sides: a = 4.24326406871   b = 6.40331242374   c = 7.28801098893

Area: T = 13.5
Perimeter: p = 17.92658748138
Semiperimeter: s = 8.96329374069

Angle ∠ A = α = 35.3954795845° = 35°23'41″ = 0.61877557256 rad
Angle ∠ B = β = 60.94553959009° = 60°56'43″ = 1.06436978224 rad
Angle ∠ C = γ = 83.66598082541° = 83°39'35″ = 1.46601391056 rad

Height: ha = 6.36439610307
Height: hb = 4.2176691571
Height: hc = 3.70987352266

Median: ma = 6.51992024052
Median: mb = 5.02549378106
Median: mc = 4.03111288741

Inradius: r = 1.50662026417
Circumradius: R = 3.66224554942

Vertex coordinates: A[0; 5] B[2; -2] C[5; 1]
Centroid: CG[2.33333333333; 1.33333333333]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[0.83767792454; 1.50662026417]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 144.6055204155° = 144°36'19″ = 0.61877557256 rad
∠ B' = β' = 119.0554604099° = 119°3'17″ = 1.06436978224 rad
∠ C' = γ' = 96.34401917459° = 96°20'25″ = 1.46601391056 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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