# 8 22 26 triangle

### Obtuse scalene triangle.

Sides: a = 8   b = 22   c = 26

Area: T = 81.97656061277
Perimeter: p = 56
Semiperimeter: s = 28

Angle ∠ A = α = 16.65661861814° = 16°39'22″ = 0.29107052897 rad
Angle ∠ B = β = 52.02201275551° = 52°1'12″ = 0.90879225031 rad
Angle ∠ C = γ = 111.3243686263° = 111°19'25″ = 1.94329648608 rad

Height: ha = 20.49439015319
Height: hb = 7.45223278298
Height: hc = 6.3065815856

Median: ma = 23.74986841741
Median: mb = 15.78797338381
Median: mc = 10.2476950766

Inradius: r = 2.92877002188
Circumradius: R = 13.95553710432

Vertex coordinates: A[26; 0] B[0; 0] C[4.92330769231; 6.3065815856]
Centroid: CG[10.30876923077; 2.10219386187]
Coordinates of the circumscribed circle: U[13; -5.07546803793]
Coordinates of the inscribed circle: I[6; 2.92877002188]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 163.3443813819° = 163°20'38″ = 0.29107052897 rad
∠ B' = β' = 127.9879872445° = 127°58'48″ = 0.90879225031 rad
∠ C' = γ' = 68.67663137365° = 68°40'35″ = 1.94329648608 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.