# 8 25 26 triangle

### Acute scalene triangle.

Sides: a = 8   b = 25   c = 26

Area: T = 99.94771735468
Perimeter: p = 59
Semiperimeter: s = 29.5

Angle ∠ A = α = 17.91104255359° = 17°54'38″ = 0.3132595896 rad
Angle ∠ B = β = 73.95220152636° = 73°57'7″ = 1.29107061548 rad
Angle ∠ C = γ = 88.13875592005° = 88°8'15″ = 1.53882906027 rad

Height: ha = 24.98767933867
Height: hb = 7.99657738837
Height: hc = 7.6888244119

Median: ma = 25.18992834356
Median: mb = 14.62201915172
Median: mc = 13.24876412995

Inradius: r = 3.38880397812
Circumradius: R = 13.00768710687

Vertex coordinates: A[26; 0] B[0; 0] C[2.21215384615; 7.6888244119]
Centroid: CG[9.40438461538; 2.56327480397]
Coordinates of the circumscribed circle: U[13; 0.42327233097]
Coordinates of the inscribed circle: I[4.5; 3.38880397812]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 162.0989574464° = 162°5'22″ = 0.3132595896 rad
∠ B' = β' = 106.0487984736° = 106°2'53″ = 1.29107061548 rad
∠ C' = γ' = 91.86224407995° = 91°51'45″ = 1.53882906027 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.