# 14 20 29 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 20   c = 29

Area: T = 125.8910577487
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 25.7288385264° = 25°43'42″ = 0.44990450341 rad
Angle ∠ B = β = 38.32771349636° = 38°19'38″ = 0.6698934698 rad
Angle ∠ C = γ = 115.9444479772° = 115°56'40″ = 2.02436129215 rad

Height: ha = 17.98443682124
Height: hb = 12.58990577487
Height: hc = 8.68221087922

Median: ma = 23.90660661758
Median: mb = 20.45772725455
Median: mc = 9.36774969976

Inradius: r = 3.99765262694
Circumradius: R = 16.12551146871

Vertex coordinates: A[29; 0] B[0; 0] C[10.98327586207; 8.68221087922]
Centroid: CG[13.32875862069; 2.89440362641]
Coordinates of the circumscribed circle: U[14.5; -7.05547376756]
Coordinates of the inscribed circle: I[11.5; 3.99765262694]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 154.2721614736° = 154°16'18″ = 0.44990450341 rad
∠ B' = β' = 141.6732865036° = 141°40'22″ = 0.6698934698 rad
∠ C' = γ' = 64.05655202276° = 64°3'20″ = 2.02436129215 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 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 ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.