Triangle calculator SSS - result

Please enter the triangle sides:

Acute scalene triangle.

Sides: a = 9   b = 14   c = 16

Area: T = 62.78108689013
Perimeter: p = 39
Semiperimeter: s = 19.5

Angle ∠ A = α = 34.09333908114° = 34°5'36″ = 0.59550419228 rad
Angle ∠ B = β = 60.68768010358° = 60°41'12″ = 1.05991844906 rad
Angle ∠ C = γ = 85.22198081528° = 85°13'11″ = 1.48773662402 rad

Height: ha = 13.95113042003
Height: hb = 8.96986955573
Height: hc = 7.84876086127

Median: ma = 14.34439882878
Median: mb = 10.93216055545
Median: mc = 8.63113382508

Inradius: r = 3.22195317385
Circumradius: R = 8.02879232961

Vertex coordinates: A[16; 0] B[0; 0] C[4.406625; 7.84876086127]
Centroid: CG[6.80220833333; 2.61658695376]
Coordinates of the circumscribed circle: U[8; 0.6698993608]
Coordinates of the inscribed circle: I[5.5; 3.22195317385]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 145.9076609189° = 145°54'24″ = 0.59550419228 rad
∠ B' = β' = 119.3133198964° = 119°18'48″ = 1.05991844906 rad
∠ C' = γ' = 94.78801918472° = 94°46'49″ = 1.48773662402 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     