Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 5   b = 28   c = 29

Area: T = 69.54113546029
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 9.86224891647° = 9°51'45″ = 0.17221329084 rad
Angle ∠ B = β = 73.57550829667° = 73°34'30″ = 1.28441274452 rad
Angle ∠ C = γ = 96.56224278686° = 96°33'45″ = 1.68553323 rad

Height: ha = 27.81765418411
Height: hb = 4.96772396145
Height: hc = 4.79659554899

Median: ma = 28.3954541729
Median: mb = 15.39548043183
Median: mc = 13.93773598648

Inradius: r = 2.24332695033
Circumradius: R = 14.59656317043

Vertex coordinates: A[29; 0] B[0; 0] C[1.41437931034; 4.79659554899]
Centroid: CG[10.13879310345; 1.599865183]
Coordinates of the circumscribed circle: U[14.5; -1.66880721948]
Coordinates of the inscribed circle: I[3; 2.24332695033]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 170.1387510835° = 170°8'15″ = 0.17221329084 rad
∠ B' = β' = 106.4254917033° = 106°25'30″ = 1.28441274452 rad
∠ C' = γ' = 83.43875721314° = 83°26'15″ = 1.68553323 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     