# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 13   b = 24   c = 26

Area: T = 155.0433340715
Perimeter: p = 63
Semiperimeter: s = 31.5

Angle ∠ A = α = 29.7977347297° = 29°47'50″ = 0.52200618187 rad
Angle ∠ B = β = 66.55112264175° = 66°33'4″ = 1.16215380222 rad
Angle ∠ C = γ = 83.65114262854° = 83°39'5″ = 1.46599928127 rad

Height: ha = 23.85328216484
Height: hb = 12.92202783929
Height: hc = 11.92664108242

Median: ma = 24.16109188567
Median: mb = 16.68883192683
Median: mc = 14.26553426177

Inradius: r = 4.92220108163
Circumradius: R = 13.08802135109

Vertex coordinates: A[26; 0] B[0; 0] C[5.17330769231; 11.92664108242]
Centroid: CG[10.3911025641; 3.97554702747]
Coordinates of the circumscribed circle: U[13; 1.44663697632]
Coordinates of the inscribed circle: I[7.5; 4.92220108163]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.2032652703° = 150°12'10″ = 0.52200618187 rad
∠ B' = β' = 113.4498773582° = 113°26'56″ = 1.16215380222 rad
∠ C' = γ' = 96.34985737146° = 96°20'55″ = 1.46599928127 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.