# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 66.23   b = 121   c = 164

Area: T = 3490.802239814
Perimeter: p = 351.23
Semiperimeter: s = 175.615

Angle ∠ A = α = 20.59989485632° = 20°35'56″ = 0.36595194749 rad
Angle ∠ B = β = 39.99988001882° = 39°59'56″ = 0.69881107601 rad
Angle ∠ C = γ = 119.4022251249° = 119°24'8″ = 2.08439624186 rad

Height: ha = 105.4154537162
Height: hb = 57.69992131923
Height: hc = 42.57107609529

Median: ma = 140.2576539152
Median: mb = 109.4587555472
Median: mc = 52.81876717586

Inradius: r = 19.87875867559
Circumradius: R = 94.12436405061

Vertex coordinates: A[164; 0] B[0; 0] C[50.7366014939; 42.57107609529]
Centroid: CG[71.57986716463; 14.1990253651]
Coordinates of the circumscribed circle: U[82; -46.20988703835]
Coordinates of the inscribed circle: I[54.615; 19.87875867559]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 159.4011051437° = 159°24'4″ = 0.36595194749 rad
∠ B' = β' = 140.0011199812° = 140°4″ = 0.69881107601 rad
∠ C' = γ' = 60.59877487514° = 60°35'52″ = 2.08439624186 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.