216 165 368 triangle

Obtuse scalene triangle.

Sides: a = 216   b = 165   c = 368

Area: T = 8990.612159975
Perimeter: p = 749
Semiperimeter: s = 374.5

Angle ∠ A = α = 17.22655165541° = 17°13'32″ = 0.30106419792 rad
Angle ∠ B = β = 13.07442203237° = 13°4'27″ = 0.22881881918 rad
Angle ∠ C = γ = 149.7700263122° = 149°42'1″ = 2.61327624826 rad

Height: ha = 83.24664037014
Height: hb = 108.97771103
Height: hc = 48.86220195638

Median: ma = 263.9332756588
Median: mb = 290.2310511835
Median: mc = 55.53882750902

Inradius: r = 24.00769735641
Circumradius: R = 364.77004393

Vertex coordinates: A[368; 0] B[0; 0] C[210.4010815217; 48.86220195638]
Centroid: CG[192.8800271739; 16.28773398546]
Coordinates of the circumscribed circle: U[184; -314.8821581591]
Coordinates of the inscribed circle: I[209.5; 24.00769735641]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 162.7744483446° = 162°46'28″ = 0.30106419792 rad
∠ B' = β' = 166.9265779676° = 166°55'33″ = 0.22881881918 rad
∠ C' = γ' = 30.32997368778° = 30°17'59″ = 2.61327624826 rad

How did we calculate this triangle?

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