Triangle calculator VC

Please enter the coordinates of the three vertices


Acute scalene triangle.

Sides: a = 8.24662112512   b = 8.6022325267   c = 7.07110678119

Area: T = 27
Perimeter: p = 23.92196043301
Semiperimeter: s = 11.96598021651

Angle ∠ A = α = 62.59224245622° = 62°35'33″ = 1.09224438954 rad
Angle ∠ B = β = 67.83436541779° = 67°50'1″ = 1.18439206091 rad
Angle ∠ C = γ = 49.57439212599° = 49°34'26″ = 0.86552281491 rad

Height: ha = 6.5488461876
Height: hb = 6.27773724922
Height: hc = 7.63767532368

Median: ma = 6.70882039325
Median: mb = 6.36439610307
Median: mc = 7.64985292704

Inradius: r = 2.25875624268
Circumradius: R = 4.64444208163

Vertex coordinates: A[3; 4] B[4; -3] C[-4; -1]
Centroid: CG[1; 0]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[0.92197476554; 2.25875624268]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 117.4087575438° = 117°24'27″ = 1.09224438954 rad
∠ B' = β' = 112.1666345822° = 112°9'59″ = 1.18439206091 rad
∠ C' = γ' = 130.426607874° = 130°25'34″ = 0.86552281491 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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