# Triangle calculator VC

Please enter the coordinates of the three vertices

### Right scalene triangle.

Sides: a = 6.32545553203   b = 7.07110678119   c = 3.16222776602

Area: T = 10
Perimeter: p = 16.55879007924
Semiperimeter: s = 8.27989503962

Angle ∠ A = α = 63.43549488229° = 63°26'6″ = 1.10771487178 rad
Angle ∠ B = β = 90° = 1.57107963268 rad
Angle ∠ C = γ = 26.56550511771° = 26°33'54″ = 0.4643647609 rad

Height: ha = 3.16222776602
Height: hb = 2.82884271247
Height: hc = 6.32545553203

Median: ma = 4.4722135955
Median: mb = 3.53655339059
Median: mc = 6.51992024052

Inradius: r = 1.20878825843
Circumradius: R = 3.53655339059

Vertex coordinates: A[0; 1] B[3; 2] C[5; -4]
Centroid: CG[2.66766666667; -0.33333333333]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[-0; 1.20878825843]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.5655051177° = 116°33'54″ = 1.10771487178 rad
∠ B' = β' = 90° = 1.57107963268 rad
∠ C' = γ' = 153.4354948823° = 153°26'6″ = 0.4643647609 rad

# How did we calculate this triangle?

### 3. We compute side c from coordinates using the Pythagorean theorem

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.