Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 22.42   b = 16.8   c = 35.34

Area: T = 148.3598760985
Perimeter: p = 74.56
Semiperimeter: s = 37.28

Angle ∠ A = α = 29.98545700935° = 29°59'4″ = 0.52333294729 rad
Angle ∠ B = β = 21.99328386443° = 21°59'34″ = 0.38438474462 rad
Angle ∠ C = γ = 128.0232591262° = 128°1'21″ = 2.23444157345 rad

Height: ha = 13.23545014259
Height: hb = 17.66217572601
Height: hc = 8.39660815498

Median: ma = 25.29765155703
Median: mb = 28.37765043654
Median: mc = 8.95765227628

Inradius: r = 3.98795804985
Circumradius: R = 22.43304634112

Vertex coordinates: A[35.34; 0] B[0; 0] C[20.78985116016; 8.39660815498]
Centroid: CG[18.71095038672; 2.79986938499]
Coordinates of the circumscribed circle: U[17.67; -13.81765404078]
Coordinates of the inscribed circle: I[20.48; 3.98795804985]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.0155429907° = 150°56″ = 0.52333294729 rad
∠ B' = β' = 158.0077161356° = 158°26″ = 0.38438474462 rad
∠ C' = γ' = 51.97774087378° = 51°58'39″ = 2.23444157345 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     