# 11 25 29 triangle

### Obtuse scalene triangle.

Sides: a = 11   b = 25   c = 29

Area: T = 135.4333332308
Perimeter: p = 65
Semiperimeter: s = 32.5

Angle ∠ A = α = 21.93883785037° = 21°56'18″ = 0.38328969374 rad
Angle ∠ B = β = 58.11551950233° = 58°6'55″ = 1.01443014986 rad
Angle ∠ C = γ = 99.9466426473° = 99°56'47″ = 1.74443942176 rad

Height: ha = 24.62442422378
Height: hb = 10.83546665846
Height: hc = 9.34402298143

Median: ma = 26.50994322836
Median: mb = 18.02108212909
Median: mc = 12.75773508222

Inradius: r = 4.16771794556
Circumradius: R = 14.72112651865

Vertex coordinates: A[29; 0] B[0; 0] C[5.81103448276; 9.34402298143]
Centroid: CG[11.60334482759; 3.11334099381]
Coordinates of the circumscribed circle: U[14.5; -2.54327639868]
Coordinates of the inscribed circle: I[7.5; 4.16771794556]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 158.0621621496° = 158°3'42″ = 0.38328969374 rad
∠ B' = β' = 121.8854804977° = 121°53'5″ = 1.01443014986 rad
∠ C' = γ' = 80.0543573527° = 80°3'13″ = 1.74443942176 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.