Triangle calculator SSS - result

Please enter the triangle sides:

Obtuse scalene triangle.

Sides: a = 8   b = 26   c = 29

Area: T = 100.8888242625
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 15.52219825604° = 15°31'19″ = 0.27109097021 rad
Angle ∠ B = β = 60.42768411792° = 60°25'37″ = 1.05546473352 rad
Angle ∠ C = γ = 104.051117626° = 104°3'4″ = 1.81660356163 rad

Height: ha = 25.22220606563
Height: hb = 7.76106340481
Height: hc = 6.95878098362

Median: ma = 27.24988531869
Median: mb = 16.83774582405
Median: mc = 12.63992246598

Inradius: r = 3.20328013532
Circumradius: R = 14.94772323113

Vertex coordinates: A[29; 0] B[0; 0] C[3.94882758621; 6.95878098362]
Centroid: CG[10.98327586207; 2.31992699454]
Coordinates of the circumscribed circle: U[14.5; -3.62990155371]
Coordinates of the inscribed circle: I[5.5; 3.20328013532]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.478801744° = 164°28'41″ = 0.27109097021 rad
∠ B' = β' = 119.5733158821° = 119°34'23″ = 1.05546473352 rad
∠ C' = γ' = 75.94988237396° = 75°56'56″ = 1.81660356163 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     