# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute isosceles triangle.

Sides: a = 7   b = 16   c = 16

Area: T = 54.6443732486
Perimeter: p = 39
Semiperimeter: s = 19.5

Angle ∠ A = α = 25.2711250186° = 25°16'16″ = 0.44110665218 rad
Angle ∠ B = β = 77.3644374907° = 77°21'52″ = 1.35502630659 rad
Angle ∠ C = γ = 77.3644374907° = 77°21'52″ = 1.35502630659 rad

Height: ha = 15.6122494996
Height: hb = 6.83304665607
Height: hc = 6.83304665607

Median: ma = 15.6122494996
Median: mb = 9.40774438611
Median: mc = 9.40774438611

Inradius: r = 2.80222426916
Circumradius: R = 8.19985614748

Vertex coordinates: A[16; 0] B[0; 0] C[1.531125; 6.83304665607]
Centroid: CG[5.844375; 2.27768221869]
Coordinates of the circumscribed circle: U[8; 1.79334353226]
Coordinates of the inscribed circle: I[3.5; 2.80222426916]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 154.7298749814° = 154°43'44″ = 0.44110665218 rad
∠ B' = β' = 102.6365625093° = 102°38'8″ = 1.35502630659 rad
∠ C' = γ' = 102.6365625093° = 102°38'8″ = 1.35502630659 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.