# 2 27 27 triangle

### Acute isosceles triangle.

Sides: a = 2   b = 27   c = 27

Area: T = 26.98114751265
Perimeter: p = 56
Semiperimeter: s = 28

Angle ∠ A = α = 4.24551027243° = 4°14'42″ = 0.07440910196 rad
Angle ∠ B = β = 87.87774486379° = 87°52'39″ = 1.5343750817 rad
Angle ∠ C = γ = 87.87774486379° = 87°52'39″ = 1.5343750817 rad

Height: ha = 26.98114751265
Height: hb = 1.99986277871
Height: hc = 1.99986277871

Median: ma = 26.98114751265
Median: mb = 13.57438719605
Median: mc = 13.57438719605

Inradius: r = 0.96436241117
Circumradius: R = 13.50992687961

Vertex coordinates: A[27; 0] B[0; 0] C[0.07440740741; 1.99986277871]
Centroid: CG[9.0254691358; 0.66662092624]
Coordinates of the circumscribed circle: U[13.5; 0.55003432887]
Coordinates of the inscribed circle: I[1; 0.96436241117]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 175.7554897276° = 175°45'18″ = 0.07440910196 rad
∠ B' = β' = 92.12325513621° = 92°7'21″ = 1.5343750817 rad
∠ C' = γ' = 92.12325513621° = 92°7'21″ = 1.5343750817 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.