# 2 22 23 triangle

### Obtuse scalene triangle.

Sides: a = 2   b = 22   c = 23

Area: T = 19.46663170631
Perimeter: p = 47
Semiperimeter: s = 23.5

Angle ∠ A = α = 4.41328111911° = 4°24'46″ = 0.07770180846 rad
Angle ∠ B = β = 57.81881160796° = 57°49'5″ = 1.00991164929 rad
Angle ∠ C = γ = 117.7699072729° = 117°46'9″ = 2.05554580761 rad

Height: ha = 19.46663170631
Height: hb = 1.77696651876
Height: hc = 1.69327232229

Median: ma = 22.48333271559
Median: mb = 12.06223380818
Median: mc = 10.57111872559

Inradius: r = 0.82883539176
Circumradius: R = 12.99768087533

Vertex coordinates: A[23; 0] B[0; 0] C[1.06552173913; 1.69327232229]
Centroid: CG[8.02217391304; 0.56442410743]
Coordinates of the circumscribed circle: U[11.5; -6.0555331351]
Coordinates of the inscribed circle: I[1.5; 0.82883539176]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 175.5877188809° = 175°35'14″ = 0.07770180846 rad
∠ B' = β' = 122.182188392° = 122°10'55″ = 1.00991164929 rad
∠ C' = γ' = 62.23109272707° = 62°13'51″ = 2.05554580761 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.