# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse isosceles triangle.

Sides: a = 16   b = 16   c = 28

Area: T = 108.4443533694
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 28.95550243719° = 28°57'18″ = 0.50553605103 rad
Angle ∠ B = β = 28.95550243719° = 28°57'18″ = 0.50553605103 rad
Angle ∠ C = γ = 122.0989951256° = 122°5'24″ = 2.1310871633 rad

Height: ha = 13.55554417117
Height: hb = 13.55554417117
Height: hc = 7.74659666924

Median: ma = 21.35441565041
Median: mb = 21.35441565041
Median: mc = 7.74659666924

Inradius: r = 3.61547844565
Circumradius: R = 16.52547289438

Vertex coordinates: A[28; 0] B[0; 0] C[14; 7.74659666924]
Centroid: CG[14; 2.58219888975]
Coordinates of the circumscribed circle: U[14; -8.77987622514]
Coordinates of the inscribed circle: I[14; 3.61547844565]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 151.0454975628° = 151°2'42″ = 0.50553605103 rad
∠ B' = β' = 151.0454975628° = 151°2'42″ = 0.50553605103 rad
∠ C' = γ' = 57.91100487437° = 57°54'36″ = 2.1310871633 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.