Triangle calculator

Please enter what you know about the triangle:
Symbols definition of ABC triangle

You have entered side a, b and c.

Obtuse scalene triangle.

Sides: a = 1.6   b = 2.6   c = 4.1

Area: T = 0.9065617883
Perimeter: p = 8.3
Semiperimeter: s = 4.15

Angle ∠ A = α = 9.78325599442° = 9°46'57″ = 0.17107378803 rad
Angle ∠ B = β = 16.02877573234° = 16°1'40″ = 0.2879737137 rad
Angle ∠ C = γ = 154.1989682732° = 154°11'23″ = 2.69111176363 rad

Height: ha = 1.13220223537
Height: hb = 0.69766291408
Height: hc = 0.4421764821

Median: ma = 3.33884127965
Median: mb = 2.82875431031
Median: mc = 0.67663874629

Inradius: r = 0.21882211766
Circumradius: R = 4.70883875883

Vertex coordinates: A[4.1; 0] B[0; 0] C[1.5387804878; 0.4421764821]
Centroid: CG[1.87992682927; 0.14772549403]
Coordinates of the circumscribed circle: U[2.05; -4.23986806534]
Coordinates of the inscribed circle: I[1.55; 0.21882211766]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 170.2177440056° = 170°13'3″ = 0.17107378803 rad
∠ B' = β' = 163.9722242677° = 163°58'20″ = 0.2879737137 rad
∠ C' = γ' = 25.81103172677° = 25°48'37″ = 2.69111176363 rad

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How did we calculate this triangle?

1. Input data entered: side a, b and c.


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