Triangle calculator SSS - result

Please enter the triangle sides:

Right scalene triangle.

Sides: a = 55   b = 48   c = 73

Area: T = 1320
Perimeter: p = 176
Semiperimeter: s = 88

Angle ∠ A = α = 48.88879095608° = 48°53'16″ = 0.85332549863 rad
Angle ∠ B = β = 41.11220904392° = 41°6'44″ = 0.71875413405 rad
Angle ∠ C = γ = 90° = 1.57107963268 rad

Height: ha = 48
Height: hb = 55
Height: hc = 36.16443835616

Median: ma = 55.32195263899
Median: mb = 60.00883327547
Median: mc = 36.5

Inradius: r = 15
Circumradius: R = 36.5

Vertex coordinates: A[73; 0] B[0; 0] C[41.43883561644; 36.16443835616]
Centroid: CG[38.14661187215; 12.05547945205]
Coordinates of the circumscribed circle: U[36.5; 0]
Coordinates of the inscribed circle: I[40; 15]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 131.1122090439° = 131°6'44″ = 0.85332549863 rad
∠ B' = β' = 138.8887909561° = 138°53'16″ = 0.71875413405 rad
∠ C' = γ' = 90° = 1.57107963268 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     