# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 80   b = 104   c = 82.4

Area: T = 3242.136586489
Perimeter: p = 266.4
Semiperimeter: s = 133.2

Angle ∠ A = α = 49.17106105901° = 49°10'14″ = 0.858818905 rad
Angle ∠ B = β = 79.62774126501° = 79°37'39″ = 1.39897605256 rad
Angle ∠ C = γ = 51.20219767599° = 51°12'7″ = 0.8943643078 rad

Height: ha = 81.05333966222
Height: hb = 62.34987666325
Height: hc = 78.69326180798

Median: ma = 84.87697826084
Median: mb = 62.37769188082
Median: mc = 83.13297780582

Inradius: r = 24.3440359346
Circumradius: R = 52.86439166101

Vertex coordinates: A[82.4; 0] B[0; 0] C[14.40438834951; 78.69326180798]
Centroid: CG[32.2687961165; 26.23108726933]
Coordinates of the circumscribed circle: U[41.2; 33.12333102113]
Coordinates of the inscribed circle: I[29.2; 24.3440359346]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 130.829938941° = 130°49'46″ = 0.858818905 rad
∠ B' = β' = 100.373258735° = 100°22'21″ = 1.39897605256 rad
∠ C' = γ' = 128.798802324° = 128°47'53″ = 0.8943643078 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.