Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 58.05   b = 16.82   c = 61

Area: T = 487.9021936633
Perimeter: p = 135.87
Semiperimeter: s = 67.935

Angle ∠ A = α = 722.0001565716° = 72°1″ = 1.25766397941 rad
Angle ∠ B = β = 15.99659301832° = 15°59'45″ = 0.27991816486 rad
Angle ∠ C = γ = 92.00439132451° = 92°14″ = 1.60657712108 rad

Height: ha = 16.81097135791
Height: hb = 58.01444990051
Height: hc = 15.99767848076

Median: ma = 34.05215135493
Median: mb = 58.9466358242
Median: mc = 29.93550538667

Inradius: r = 7.18218935252
Circumradius: R = 30.5198663961

Vertex coordinates: A[61; 0] B[0; 0] C[55.80223778689; 15.99767848076]
Centroid: CG[38.93441259563; 5.33222616025]
Coordinates of the circumscribed circle: U[30.5; -1.06771691346]
Coordinates of the inscribed circle: I[51.115; 7.18218935252]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1087.999843428° = 107°59'59″ = 1.25766397941 rad
∠ B' = β' = 164.0044069817° = 164°15″ = 0.27991816486 rad
∠ C' = γ' = 87.99660867549° = 87°59'46″ = 1.60657712108 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     