# 7 26 27 triangle

### Obtuse scalene triangle.

Sides: a = 7   b = 26   c = 27

Area: T = 90.99545053286
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 15.02551850802° = 15°1'31″ = 0.26222389504 rad
Angle ∠ B = β = 74.34551782964° = 74°20'43″ = 1.29875681443 rad
Angle ∠ C = γ = 90.63296366234° = 90°37'47″ = 1.5821785559 rad

Height: ha = 25.99884300939
Height: hb = 76.999577333
Height: hc = 6.7440333728

Median: ma = 26.27326093108
Median: mb = 14.83223969742
Median: mc = 13.42657215821

Inradius: r = 3.03331501776
Circumradius: R = 13.50108151928

Vertex coordinates: A[27; 0] B[0; 0] C[1.88988888889; 6.7440333728]
Centroid: CG[9.63296296296; 2.24767779093]
Coordinates of the circumscribed circle: U[13.5; -0.14883606065]
Coordinates of the inscribed circle: I[4; 3.03331501776]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.975481492° = 164°58'29″ = 0.26222389504 rad
∠ B' = β' = 105.6554821704° = 105°39'17″ = 1.29875681443 rad
∠ C' = γ' = 89.37703633766° = 89°22'13″ = 1.5821785559 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.