Triangle calculator

Please enter what you know about the triangle:
You have entered side a, b and c.

Obtuse scalene triangle.

Sides: a = 24.3   b = 13.45   c = 11.6

Area: T = 36.85217603411
Perimeter: p = 49.35
Semiperimeter: s = 24.675

Angle ∠ A = α = 151.8109937537° = 151°48'36″ = 2.65495832473 rad
Angle ∠ B = β = 15.15773798302° = 15°9'27″ = 0.2654546184 rad
Angle ∠ C = γ = 13.03326826329° = 13°1'58″ = 0.22774632223 rad

Height: ha = 3.03330666947
Height: hb = 5.48798156641
Height: hc = 6.35437517829

Median: ma = 3.17994260488
Median: mb = 17.81328991183
Median: mc = 18.76331620469

Inradius: r = 1.49334857281
Circumradius: R = 25.72198432647

Vertex coordinates: A[11.6; 0] B[0; 0] C[23.45546336207; 6.35437517829]
Centroid: CG[11.68548778736; 2.1187917261]
Coordinates of the circumscribed circle: U[5.8; 25.05773409914]
Coordinates of the inscribed circle: I[11.225; 1.49334857281]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 28.19900624631° = 28°11'24″ = 2.65495832473 rad
∠ B' = β' = 164.843262017° = 164°50'33″ = 0.2654546184 rad
∠ C' = γ' = 166.9677317367° = 166°58'2″ = 0.22774632223 rad

How did we calculate this triangle?

1. Input data entered: side a, b and c. 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     