# 8 25 29 triangle

### Obtuse scalene triangle.

Sides: a = 8   b = 25   c = 29

Area: T = 92.49986486388
Perimeter: p = 62
Semiperimeter: s = 31

Angle ∠ A = α = 14.78435808094° = 14°47'1″ = 0.25880221604 rad
Angle ∠ B = β = 52.88327365328° = 52°52'58″ = 0.923297787 rad
Angle ∠ C = γ = 112.3343682658° = 112°20'1″ = 1.96105926233 rad

Height: ha = 23.12546621597
Height: hb = 7.43998918911
Height: hc = 6.37992171475

Median: ma = 26.7776855678
Median: mb = 17.21219144781
Median: mc = 11.58766302263

Inradius: r = 2.98438273754
Circumradius: R = 15.67659046898

Vertex coordinates: A[29; 0] B[0; 0] C[4.82875862069; 6.37992171475]
Centroid: CG[11.2765862069; 2.12664057158]
Coordinates of the circumscribed circle: U[14.5; -5.95768437821]
Coordinates of the inscribed circle: I[6; 2.98438273754]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 165.2166419191° = 165°12'59″ = 0.25880221604 rad
∠ B' = β' = 127.1177263467° = 127°7'2″ = 0.923297787 rad
∠ C' = γ' = 67.66663173422° = 67°39'59″ = 1.96105926233 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.