# 7 24 26 triangle

### Obtuse scalene triangle.

Sides: a = 7   b = 24   c = 26

Area: T = 83.02767276243
Perimeter: p = 57
Semiperimeter: s = 28.5

Angle ∠ A = α = 15.43329972651° = 15°25'59″ = 0.26993566157 rad
Angle ∠ B = β = 65.8376577219° = 65°50'12″ = 1.14990650407 rad
Angle ∠ C = γ = 98.73304255159° = 98°43'50″ = 1.72331709971 rad

Height: ha = 23.72219221784
Height: hb = 6.91988939687
Height: hc = 6.38766713557

Median: ma = 24.77439782837
Median: mb = 14.78217454991
Median: mc = 11.97991485507

Inradius: r = 2.91332185131
Circumradius: R = 13.15223911787

Vertex coordinates: A[26; 0] B[0; 0] C[2.86553846154; 6.38766713557]
Centroid: CG[9.62217948718; 2.12988904519]
Coordinates of the circumscribed circle: U[13; -1.99663450896]
Coordinates of the inscribed circle: I[4.5; 2.91332185131]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.5677002735° = 164°34'1″ = 0.26993566157 rad
∠ B' = β' = 114.1633422781° = 114°9'48″ = 1.14990650407 rad
∠ C' = γ' = 81.27695744841° = 81°16'10″ = 1.72331709971 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.