# 4 24 26 triangle

### Obtuse scalene triangle.

Sides: a = 4   b = 24   c = 26

Area: T = 43.16224837098
Perimeter: p = 54
Semiperimeter: s = 27

Angle ∠ A = α = 7.95218754307° = 7°57'7″ = 0.1398786408 rad
Angle ∠ B = β = 56.1043644797° = 56°6'13″ = 0.97991933241 rad
Angle ∠ C = γ = 115.9444479772° = 115°56'40″ = 2.02436129215 rad

Height: ha = 21.58112418549
Height: hb = 3.59768736425
Height: hc = 3.32201910546

Median: ma = 24.94399278267
Median: mb = 14.21326704036
Median: mc = 11.26994276696

Inradius: r = 1.59986105078
Circumradius: R = 14.45769993746

Vertex coordinates: A[26; 0] B[0; 0] C[2.23107692308; 3.32201910546]
Centroid: CG[9.41102564103; 1.10767303515]
Coordinates of the circumscribed circle: U[13; -6.32549372264]
Coordinates of the inscribed circle: I[3; 1.59986105078]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 172.0488124569° = 172°2'53″ = 0.1398786408 rad
∠ B' = β' = 123.8966355203° = 123°53'47″ = 0.97991933241 rad
∠ C' = γ' = 64.05655202276° = 64°3'20″ = 2.02436129215 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.