# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 22   b = 22   c = 28

Area: T = 237.5887878479
Perimeter: p = 72
Semiperimeter: s = 36

Angle ∠ A = α = 50.47988036414° = 50°28'44″ = 0.8811021326 rad
Angle ∠ B = β = 50.47988036414° = 50°28'44″ = 0.8811021326 rad
Angle ∠ C = γ = 79.04223927173° = 79°2'33″ = 1.38795500016 rad

Height: ha = 21.59988980435
Height: hb = 21.59988980435
Height: hc = 16.97105627485

Median: ma = 22.65495033058
Median: mb = 22.65495033058
Median: mc = 16.97105627485

Inradius: r = 6.65996632911
Circumradius: R = 14.26599867539

Vertex coordinates: A[28; 0] B[0; 0] C[14; 16.97105627485]
Centroid: CG[14; 5.65768542495]
Coordinates of the circumscribed circle: U[14; 2.71105759945]
Coordinates of the inscribed circle: I[14; 6.65996632911]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 129.5211196359° = 129°31'16″ = 0.8811021326 rad
∠ B' = β' = 129.5211196359° = 129°31'16″ = 0.8811021326 rad
∠ C' = γ' = 100.9587607283° = 100°57'27″ = 1.38795500016 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.