Triangle calculator SSS - result

Please enter the triangle sides:

Acute scalene triangle.

Sides: a = 25   b = 29   c = 30

Area: T = 333.7422415644
Perimeter: p = 84
Semiperimeter: s = 42

Angle ∠ A = α = 50.1055251744° = 50°6'19″ = 0.87545016155 rad
Angle ∠ B = β = 62.87107055354° = 62°52'15″ = 1.09773008146 rad
Angle ∠ C = γ = 67.02440427206° = 67°1'27″ = 1.17697902235 rad

Height: ha = 26.69993932515
Height: hb = 23.01767183203
Height: hc = 22.24994943763

Median: ma = 26.72554560298
Median: mb = 23.5
Median: mc = 22.53988553392

Inradius: r = 7.94662479915
Circumradius: R = 16.29325050731

Vertex coordinates: A[30; 0] B[0; 0] C[11.4; 22.24994943763]
Centroid: CG[13.8; 7.41664981254]
Coordinates of the circumscribed circle: U[15; 6.36596950837]
Coordinates of the inscribed circle: I[13; 7.94662479915]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 129.8954748256° = 129°53'41″ = 0.87545016155 rad
∠ B' = β' = 117.1299294465° = 117°7'45″ = 1.09773008146 rad
∠ C' = γ' = 112.9765957279° = 112°58'33″ = 1.17697902235 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     