Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 36   b = 20.78   c = 41.57

Area: T = 374.0439994503
Perimeter: p = 98.35
Semiperimeter: s = 49.175

Angle ∠ A = α = 59.99881350402° = 59°59'53″ = 1.04771650015 rad
Angle ∠ B = β = 29.99220422353° = 29°59'31″ = 0.52334598864 rad
Angle ∠ C = γ = 90.01098227245° = 90°35″ = 1.57109677657 rad

Height: ha = 20.78799996946
Height: hb = 365.999999471
Height: hc = 17.99656696898

Median: ma = 27.4944302137
Median: mb = 37.47110601665
Median: mc = 20.78219146134

Inradius: r = 7.60663039045
Circumradius: R = 20.78550003054

Vertex coordinates: A[41.57; 0] B[0; 0] C[31.1799414241; 17.99656696898]
Centroid: CG[24.2549804747; 5.99985565633]
Coordinates of the circumscribed circle: U[20.785; -0.00435633572]
Coordinates of the inscribed circle: I[28.395; 7.60663039045]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120.002186496° = 120°7″ = 1.04771650015 rad
∠ B' = β' = 150.0087957765° = 150°29″ = 0.52334598864 rad
∠ C' = γ' = 89.99901772755° = 89°59'25″ = 1.57109677657 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     