Triangle calculator SAS

Please enter two sides of the triangle and the included angle
°

Obtuse scalene triangle.

Sides: a = 263.93   b = 184.463263   c = 80.68804890408

Area: T = 1536.966550305
Perimeter: p = 529.0733119041
Semiperimeter: s = 264.537655952

Angle ∠ A = α = 168.0879973218° = 168°4'48″ = 2.93435489393 rad
Angle ∠ B = β = 8.33000267824° = 8°18' = 0.14548627954 rad
Angle ∠ C = γ = 3.62° = 3°37'12″ = 0.06331809189 rad

Height: ha = 11.64767662111
Height: hb = 16.66442479623
Height: hc = 38.11000542095

Median: ma = 53.41547953679
Median: mb = 171.9811329334
Median: mc = 224.0887969457

Inradius: r = 5.81100305902
Circumradius: R = 638.9132764641

Vertex coordinates: A[80.68804890408; 0] B[0; 0] C[261.1665523699; 38.11000542095]
Centroid: CG[113.9498670913; 12.77000180698]
Coordinates of the circumscribed circle: U[40.34402445204; 637.6387973691]
Coordinates of the inscribed circle: I[80.07439295204; 5.81100305902]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 11.92200267824° = 11°55'12″ = 2.93435489393 rad
∠ B' = β' = 171.7699973218° = 171°42' = 0.14548627954 rad
∠ C' = γ' = 176.38° = 176°22'48″ = 0.06331809189 rad

How did we calculate this triangle?

1. Calculation of the third side c of the triangle using a Law of Cosines 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. 2. The triangle circumference is the sum of the lengths of its three sides 3. Semiperimeter of the triangle 4. The triangle area using Heron's formula 5. Calculate the heights of the triangle from its area. 6. Calculation of the inner angles of the triangle using a Law of Cosines     