Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 100   b = 90   c = 163.29

Area: T = 3958.096567748
Perimeter: p = 353.29
Semiperimeter: s = 176.645

Angle ∠ A = α = 32.59224200732° = 32°35'33″ = 0.56988450415 rad
Angle ∠ B = β = 28.99989371321° = 28°59'56″ = 0.50661269325 rad
Angle ∠ C = γ = 118.4098642795° = 118°24'31″ = 2.06766206796 rad

Height: ha = 79.16219135497
Height: hb = 87.95876817219
Height: hc = 48.47993395491

Median: ma = 121.9911032662
Median: mb = 127.6988128608
Median: mc = 48.82771847949

Inradius: r = 22.40770631916
Circumradius: R = 92.82330467217

Vertex coordinates: A[163.29; 0] B[0; 0] C[87.46328700472; 48.47993395491]
Centroid: CG[83.58442900157; 16.16597798497]
Coordinates of the circumscribed circle: U[81.645; -44.16112044412]
Coordinates of the inscribed circle: I[86.645; 22.40770631916]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 147.4087579927° = 147°24'27″ = 0.56988450415 rad
∠ B' = β' = 151.0011062868° = 151°4″ = 0.50661269325 rad
∠ C' = γ' = 61.59113572053° = 61°35'29″ = 2.06766206796 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     