# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 38   b = 42   c = 55.69

Area: T = 797.5554674613
Perimeter: p = 135.69
Semiperimeter: s = 67.845

Angle ∠ A = α = 42.9987616102° = 42°59'51″ = 0.75504499715 rad
Angle ∠ B = β = 48.91766182705° = 48°55' = 0.85437560478 rad
Angle ∠ C = γ = 88.08657656275° = 88°5'9″ = 1.53773866343 rad

Height: ha = 41.97765618217
Height: hb = 37.97987940292
Height: hc = 28.64326530656

Median: ma = 45.5165800004
Median: mb = 42.79882248464
Median: mc = 28.78663852368

Inradius: r = 11.75655409332
Circumradius: R = 27.86105476305

Vertex coordinates: A[55.69; 0] B[0; 0] C[24.97219527743; 28.64326530656]
Centroid: CG[26.88773175914; 9.54875510219]
Coordinates of the circumscribed circle: U[27.845; 0.93106391743]
Coordinates of the inscribed circle: I[25.845; 11.75655409332]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 137.0022383898° = 137°9″ = 0.75504499715 rad
∠ B' = β' = 131.0833381729° = 131°5' = 0.85437560478 rad
∠ C' = γ' = 91.91442343725° = 91°54'51″ = 1.53773866343 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.