Triangle calculator VC

Please enter the coordinates of the three vertices


Obtuse scalene triangle.

Sides: a = 14.03656688476   b = 11.18803398875   c = 3.16222776602

Area: T = 8.5
Perimeter: p = 28.37882863953
Semiperimeter: s = 14.18991431976

Angle ∠ A = α = 151.2660204708° = 151°15'37″ = 2.64399885994 rad
Angle ∠ B = β = 22.52105656029° = 22°31'14″ = 0.39330580192 rad
Angle ∠ C = γ = 6.21992296888° = 6°13'9″ = 0.1098546035 rad

Height: ha = 1.21111998498
Height: hb = 1.52105262247
Height: hc = 5.37658720223

Median: ma = 4.27220018727
Median: mb = 8.5
Median: mc = 12.5989678312

Inradius: r = 0.59990495608
Circumradius: R = 14.59551715009

Vertex coordinates: A[-10; -4] B[-9; -7] C[-8; 7]
Centroid: CG[-9; -1.33333333333]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[1.44547665877; 0.59990495608]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 28.74397952917° = 28°44'23″ = 2.64399885994 rad
∠ B' = β' = 157.4799434397° = 157°28'46″ = 0.39330580192 rad
∠ C' = γ' = 173.7810770311° = 173°46'51″ = 0.1098546035 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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