Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 270   b = 260   c = 48.42

Area: T = 6251.084403114
Perimeter: p = 578.42
Semiperimeter: s = 289.21

Angle ∠ A = α = 96.74110633073° = 96°44'28″ = 1.68884500766 rad
Angle ∠ B = β = 733.0002018503° = 73°1″ = 1.27440938769 rad
Angle ∠ C = γ = 10.25987348424° = 10°15'31″ = 0.17990487001 rad

Height: ha = 46.30443261566
Height: hb = 48.0855261778
Height: hc = 258.2032562212

Median: ma = 129.4111159488
Median: mb = 143.9522242775
Median: mc = 263.9399151889

Inradius: r = 21.6144342627
Circumradius: R = 135.9439781927

Vertex coordinates: A[48.42; 0] B[0; 0] C[78.93994506402; 258.2032562212]
Centroid: CG[42.45331502134; 86.06875207372]
Coordinates of the circumscribed circle: U[24.21; 133.7676588543]
Coordinates of the inscribed circle: I[29.21; 21.6144342627]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 83.25989366927° = 83°15'32″ = 1.68884500766 rad
∠ B' = β' = 1076.99979815° = 106°59'59″ = 1.27440938769 rad
∠ C' = γ' = 169.7411265158° = 169°44'29″ = 0.17990487001 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     