# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 9   b = 25   c = 26

Area: T = 112.2549721603
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 20.20552235834° = 20°12'19″ = 0.35326476776 rad
Angle ∠ B = β = 73.61773301459° = 73°37'2″ = 1.28548647976 rad
Angle ∠ C = γ = 86.17774462707° = 86°10'39″ = 1.50440801784 rad

Height: ha = 24.94443825785
Height: hb = 8.98799777283
Height: hc = 8.63545939695

Median: ma = 25.10547804213
Median: mb = 14.90880515159
Median: mc = 13.56546599663

Inradius: r = 3.74216573868
Circumradius: R = 13.02989855432

Vertex coordinates: A[26; 0] B[0; 0] C[2.53884615385; 8.63545939695]
Centroid: CG[9.51328205128; 2.87881979898]
Coordinates of the circumscribed circle: U[13; 0.86985990362]
Coordinates of the inscribed circle: I[5; 3.74216573868]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.7954776417° = 159°47'41″ = 0.35326476776 rad
∠ B' = β' = 106.3832669854° = 106°22'58″ = 1.28548647976 rad
∠ C' = γ' = 93.82325537293° = 93°49'21″ = 1.50440801784 rad

# How did we calculate this triangle? ### 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.