# 11 22 29 triangle

### Obtuse scalene triangle.

Sides: a = 11   b = 22   c = 29

Area: T = 105.641090117
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 19.33993618163° = 19°20'22″ = 0.33875355389 rad
Angle ∠ B = β = 41.47774630076° = 41°28'39″ = 0.72439182949 rad
Angle ∠ C = γ = 119.1833175176° = 119°10'59″ = 2.08801388198 rad

Height: ha = 19.20774365764
Height: hb = 9.60437182882
Height: hc = 7.2865579391

Median: ma = 25.14545819214
Median: mb = 18.9743665961
Median: mc = 9.60546863561

Inradius: r = 3.40877710055
Circumradius: R = 16.60881506364

Vertex coordinates: A[29; 0] B[0; 0] C[8.24113793103; 7.2865579391]
Centroid: CG[12.41437931034; 2.42985264637]
Coordinates of the circumscribed circle: U[14.5; -8.09881891533]
Coordinates of the inscribed circle: I[9; 3.40877710055]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 160.6610638184° = 160°39'38″ = 0.33875355389 rad
∠ B' = β' = 138.5232536992° = 138°31'21″ = 0.72439182949 rad
∠ C' = γ' = 60.8176824824° = 60°49'1″ = 2.08801388198 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.