Triangle calculator

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

You have entered side a, b and area S.

Triangle has two solutions: a=8.94; b=7.5; c=14.99217714647 and a=8.94; b=7.5; c=6.8998839638.

#1 Obtuse scalene triangle.

Sides: a = 8.94   b = 7.5   c = 14.99217714647

Area: T = 25.17
Perimeter: p = 31.43217714647
Semiperimeter: s = 15.71658857323

Angle ∠ A = α = 26.59769998929° = 26°35'49″ = 0.46442052193 rad
Angle ∠ B = β = 22.06112492706° = 22°3'40″ = 0.38550414369 rad
Angle ∠ C = γ = 131.3421750837° = 131°20'30″ = 2.29223459974 rad

Height: ha = 5.63108724832
Height: hb = 6.712
Height: hc = 3.35878420081

Median: ma = 10.9788192284
Median: mb = 11.75990775924
Median: mc = 3.4499419819

Inradius: r = 1.60215642025
Circumradius: R = 9.98440909486

Vertex coordinates: A[14.99217714647; 0] B[0; 0] C[8.28554388567; 3.35878420081]
Centroid: CG[7.75990701071; 1.11992806694]
Coordinates of the circumscribed circle: U[7.49658857323; -6.59549806033]
Coordinates of the inscribed circle: I[8.21658857323; 1.60215642025]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.4033000107° = 153°24'11″ = 0.46442052193 rad
∠ B' = β' = 157.9398750729° = 157°56'20″ = 0.38550414369 rad
∠ C' = γ' = 48.65882491635° = 48°39'30″ = 2.29223459974 rad




How did we calculate this triangle?

1. Input data entered: side a, b and area S.


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