# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 7   b = 11   c = 11

Area: T = 36.49991438256
Perimeter: p = 29
Semiperimeter: s = 14.5

Angle ∠ A = α = 37.106600907° = 37°6'22″ = 0.64876220305 rad
Angle ∠ B = β = 71.4476995465° = 71°26'49″ = 1.24769853115 rad
Angle ∠ C = γ = 71.4476995465° = 71°26'49″ = 1.24769853115 rad

Height: ha = 10.42883268073
Height: hb = 6.63662079683
Height: hc = 6.63662079683

Median: ma = 10.42883268073
Median: mb = 7.39993242935
Median: mc = 7.39993242935

Inradius: r = 2.51771823328
Circumradius: R = 5.8021505948

Vertex coordinates: A[11; 0] B[0; 0] C[2.22772727273; 6.63662079683]
Centroid: CG[4.40990909091; 2.21220693228]
Coordinates of the circumscribed circle: U[5.5; 1.84659337107]
Coordinates of the inscribed circle: I[3.5; 2.51771823328]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 142.894399093° = 142°53'38″ = 0.64876220305 rad
∠ B' = β' = 108.5533004535° = 108°33'11″ = 1.24769853115 rad
∠ C' = γ' = 108.5533004535° = 108°33'11″ = 1.24769853115 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.