# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 12.7   b = 9.32   c = 5.8

Area: T = 25.03107014362
Perimeter: p = 27.82
Semiperimeter: s = 13.91

Angle ∠ A = α = 112.1654788661° = 112°9'53″ = 1.95876448669 rad
Angle ∠ B = β = 42.81545851443° = 42°48'53″ = 0.74772554786 rad
Angle ∠ C = γ = 25.02106261947° = 25°1'14″ = 0.4376692308 rad

Height: ha = 3.94218427459
Height: hb = 5.3711395158
Height: hc = 8.63112763573

Median: ma = 4.46441572553
Median: mb = 8.70334131236
Median: mc = 10.75548221743

Inradius: r = 1.7999475301
Circumradius: R = 6.85766915888

Vertex coordinates: A[5.8; 0] B[0; 0] C[9.31661724138; 8.63112763573]
Centroid: CG[5.03987241379; 2.87770921191]
Coordinates of the circumscribed circle: U[2.9; 6.21332293974]
Coordinates of the inscribed circle: I[4.59; 1.7999475301]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 67.8355211339° = 67°50'7″ = 1.95876448669 rad
∠ B' = β' = 137.1855414856° = 137°11'7″ = 0.74772554786 rad
∠ C' = γ' = 154.9799373805° = 154°58'46″ = 0.4376692308 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.