Triangle calculator VC

Please enter the coordinates of the three vertices


Obtuse scalene triangle.

Sides: a = 4.12331056256   b = 3.60655512755   c = 6.32545553203

Area: T = 7
Perimeter: p = 14.05332122214
Semiperimeter: s = 7.02766061107

Angle ∠ A = α = 37.87549836511° = 37°52'30″ = 0.66110431689 rad
Angle ∠ B = β = 32.47111922908° = 32°28'16″ = 0.56767292175 rad
Angle ∠ C = γ = 109.6543824058° = 109°39'14″ = 1.91438202672 rad

Height: ha = 3.39554987505
Height: hb = 3.88329013736
Height: hc = 2.21435943621

Median: ma = 4.7176990566
Median: mb = 5.02549378106
Median: mc = 2.23660679775

Inradius: r = 0.9966213519
Circumradius: R = 3.35879026496

Vertex coordinates: A[1; 4] B[3; -2] C[4; 2]
Centroid: CG[2.66766666667; 1.33333333333]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[1.5655478387; 0.9966213519]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 142.1255016349° = 142°7'30″ = 0.66110431689 rad
∠ B' = β' = 147.5298807709° = 147°31'44″ = 0.56767292175 rad
∠ C' = γ' = 70.34661759419° = 70°20'46″ = 1.91438202672 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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