# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 12.37   b = 2.24   c = 10.77

Area: T = 9.02663996809
Perimeter: p = 25.38
Semiperimeter: s = 12.69

Angle ∠ A = α = 131.5565910246° = 131°33'21″ = 2.29660837842 rad
Angle ∠ B = β = 7.78878917386° = 7°47'16″ = 0.13659243526 rad
Angle ∠ C = γ = 40.65661980156° = 40°39'22″ = 0.71095845167 rad

Height: ha = 1.45994017269
Height: hb = 8.05992854294
Height: hc = 1.67662116399

Median: ma = 4.71770992146
Median: mb = 11.5433418038
Median: mc = 7.07224129546

Inradius: r = 0.71113002113
Circumradius: R = 8.26553047325

Vertex coordinates: A[10.77; 0] B[0; 0] C[12.25659052925; 1.67662116399]
Centroid: CG[7.67553017642; 0.55987372133]
Coordinates of the circumscribed circle: U[5.385; 6.27703299212]
Coordinates of the inscribed circle: I[10.45; 0.71113002113]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 48.44440897542° = 48°26'39″ = 2.29660837842 rad
∠ B' = β' = 172.2122108261° = 172°12'44″ = 0.13659243526 rad
∠ C' = γ' = 139.3443801984° = 139°20'38″ = 0.71095845167 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.