Triangle calculator SSS - result

Please enter the triangle sides:

Acute scalene triangle.

Sides: a = 3.61   b = 4.12   c = 3.16

Area: T = 5.55000674777
Perimeter: p = 10.89
Semiperimeter: s = 5.445

Angle ∠ A = α = 57.66329746752° = 57°39'47″ = 1.00664087646 rad
Angle ∠ B = β = 74.64401519127° = 74°38'25″ = 1.30327164051 rad
Angle ∠ C = γ = 47.6976873412° = 47°41'49″ = 0.83224674839 rad

Height: ha = 3.04771287965
Height: hb = 2.67699356688
Height: hc = 3.48110553656

Median: ma = 3.19771823533
Median: mb = 2.69554127699
Median: mc = 3.53765025095

Inradius: r = 1.01101134027
Circumradius: R = 2.1366306154

Vertex coordinates: A[3.16; 0] B[0; 0] C[0.95662183544; 3.48110553656]
Centroid: CG[1.37220727848; 1.16603517885]
Coordinates of the circumscribed circle: U[1.58; 1.43878469959]
Coordinates of the inscribed circle: I[1.325; 1.01101134027]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 122.3377025325° = 122°20'13″ = 1.00664087646 rad
∠ B' = β' = 105.3659848087° = 105°21'35″ = 1.30327164051 rad
∠ C' = γ' = 132.3033126588° = 132°18'11″ = 0.83224674839 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     