# 9 14 22 triangle

### Obtuse scalene triangle.

Sides: a = 9   b = 14   c = 22

Area: T = 35.9329618701
Perimeter: p = 45
Semiperimeter: s = 22.5

Angle ∠ A = α = 13.49219775635° = 13°29'31″ = 0.23554794311 rad
Angle ∠ B = β = 21.28799664684° = 21°16'48″ = 0.37114054796 rad
Angle ∠ C = γ = 145.2288055968° = 145°13'41″ = 2.53547077429 rad

Height: ha = 7.98443597113
Height: hb = 5.13328026716
Height: hc = 3.26663289728

Median: ma = 17.88215547422
Median: mb = 15.28107067899
Median: mc = 4.18333001327

Inradius: r = 1.59768719423
Circumradius: R = 19.28877081654

Vertex coordinates: A[22; 0] B[0; 0] C[8.38663636364; 3.26663289728]
Centroid: CG[10.12987878788; 1.08987763243]
Coordinates of the circumscribed circle: U[11; -15.84334745645]
Coordinates of the inscribed circle: I[8.5; 1.59768719423]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 166.5088022436° = 166°30'29″ = 0.23554794311 rad
∠ B' = β' = 158.7220033532° = 158°43'12″ = 0.37114054796 rad
∠ C' = γ' = 34.77219440319° = 34°46'19″ = 2.53547077429 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.