# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 2.24   b = 2.24   c = 4.24

Area: T = 1.53334503839
Perimeter: p = 8.72
Semiperimeter: s = 4.36

Angle ∠ A = α = 18.83991969707° = 18°50'21″ = 0.32988060156 rad
Angle ∠ B = β = 18.83991969707° = 18°50'21″ = 0.32988060156 rad
Angle ∠ C = γ = 142.3221606059° = 142°19'18″ = 2.48439806224 rad

Height: ha = 1.36991521285
Height: hb = 1.36991521285
Height: hc = 0.72333256528

Median: ma = 3.22004999609
Median: mb = 3.22004999609
Median: mc = 0.72333256528

Inradius: r = 0.35217088037
Circumradius: R = 3.46884239254

Vertex coordinates: A[4.24; 0] B[0; 0] C[2.12; 0.72333256528]
Centroid: CG[2.12; 0.24111085509]
Coordinates of the circumscribed circle: U[2.12; -2.74550982726]
Coordinates of the inscribed circle: I[2.12; 0.35217088037]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 161.1610803029° = 161°9'39″ = 0.32988060156 rad
∠ B' = β' = 161.1610803029° = 161°9'39″ = 0.32988060156 rad
∠ C' = γ' = 37.67883939414° = 37°40'42″ = 2.48439806224 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.