Triangle calculator VC

Please enter the coordinates of the three vertices


Acute isosceles triangle.

Sides: a = 1.41442135624   b = 2.23660679775   c = 2.23660679775

Area: T = 1.5
Perimeter: p = 5.88663495174
Semiperimeter: s = 2.94331747587

Angle ∠ A = α = 36.87698976458° = 36°52'12″ = 0.64435011088 rad
Angle ∠ B = β = 71.56550511771° = 71°33'54″ = 1.24990457724 rad
Angle ∠ C = γ = 71.56550511771° = 71°33'54″ = 1.24990457724 rad

Height: ha = 2.12113203436
Height: hb = 1.34216407865
Height: hc = 1.34216407865

Median: ma = 2.12113203436
Median: mb = 1.5
Median: mc = 1.5

Inradius: r = 0.51096537321
Circumradius: R = 1.1798511302

Vertex coordinates: A[0; 0] B[1; 2] C[2; 1]
Centroid: CG[1; 1]
Coordinates of the circumscribed circle: U[0; 0]
Coordinates of the inscribed circle: I[0.17698845774; 0.51096537321]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 143.1330102354° = 143°7'48″ = 0.64435011088 rad
∠ B' = β' = 108.4354948823° = 108°26'6″ = 1.24990457724 rad
∠ C' = γ' = 108.4354948823° = 108°26'6″ = 1.24990457724 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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