# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 23   b = 26   c = 27

Area: T = 274.2999106816
Perimeter: p = 76
Semiperimeter: s = 38

Angle ∠ A = α = 51.39661856156° = 51°23'46″ = 0.8977032662 rad
Angle ∠ B = β = 62.05766048416° = 62°3'24″ = 1.08330920771 rad
Angle ∠ C = γ = 66.54772095428° = 66°32'50″ = 1.16114679145 rad

Height: ha = 23.85220962449
Height: hb = 21.10999312935
Height: hc = 20.31884523567

Median: ma = 23.88799078725
Median: mb = 21.44876105895
Median: mc = 20.5

Inradius: r = 7.21883975478
Circumradius: R = 14.71656877281

Vertex coordinates: A[27; 0] B[0; 0] C[10.77877777778; 20.31884523567]
Centroid: CG[12.59325925926; 6.77328174522]
Coordinates of the circumscribed circle: U[13.5; 5.85767452831]
Coordinates of the inscribed circle: I[12; 7.21883975478]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 128.6043814384° = 128°36'14″ = 0.8977032662 rad
∠ B' = β' = 117.9433395158° = 117°56'36″ = 1.08330920771 rad
∠ C' = γ' = 113.4532790457° = 113°27'10″ = 1.16114679145 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.