# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 19   b = 21   c = 25

Area: T = 194.531068524
Perimeter: p = 65
Semiperimeter: s = 32.5

Angle ∠ A = α = 47.82325813991° = 47°49'21″ = 0.83546615022 rad
Angle ∠ B = β = 54.99224613631° = 54°59'33″ = 0.96597995146 rad
Angle ∠ C = γ = 77.18549572378° = 77°11'6″ = 1.34771316368 rad

Height: ha = 20.47769142358
Height: hb = 18.52767319276
Height: hc = 15.56224548192

Median: ma = 21.04216254125
Median: mb = 19.56439975465
Median: mc = 15.64444878472

Inradius: r = 5.98655595459
Circumradius: R = 12.81993143253

Vertex coordinates: A[25; 0] B[0; 0] C[10.9; 15.56224548192]
Centroid: CG[11.96766666667; 5.18774849397]
Coordinates of the circumscribed circle: U[12.5; 2.84333817488]
Coordinates of the inscribed circle: I[11.5; 5.98655595459]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 132.1777418601° = 132°10'39″ = 0.83546615022 rad
∠ B' = β' = 125.0087538637° = 125°27″ = 0.96597995146 rad
∠ C' = γ' = 102.8155042762° = 102°48'54″ = 1.34771316368 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.