Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 37.3   b = 29.8   c = 9.88

Area: T = 106.7132735626
Perimeter: p = 76.98
Semiperimeter: s = 38.49

Angle ∠ A = α = 133.5440172747° = 133°32'25″ = 2.33107156981 rad
Angle ∠ B = β = 35.39897880085° = 35°23'23″ = 0.61876683223 rad
Angle ∠ C = γ = 11.07700392447° = 11°4'12″ = 0.19332086331 rad

Height: ha = 5.72218625001
Height: hb = 7.16219285655
Height: hc = 21.60217683453

Median: ma = 12.04217897341
Median: mb = 22.85769945531
Median: mc = 33.3965529641

Inradius: r = 2.77224794915
Circumradius: R = 25.72879862979

Vertex coordinates: A[9.88; 0] B[0; 0] C[30.40881174089; 21.60217683453]
Centroid: CG[13.42993724696; 7.20105894484]
Coordinates of the circumscribed circle: U[4.94; 25.24992708597]
Coordinates of the inscribed circle: I[8.69; 2.77224794915]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 46.46598272533° = 46°27'35″ = 2.33107156981 rad
∠ B' = β' = 144.6110211991° = 144°36'37″ = 0.61876683223 rad
∠ C' = γ' = 168.9329960755° = 168°55'48″ = 0.19332086331 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     