# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 1.41   b = 3.16   c = 2.83

Area: T = 1.99551479644
Perimeter: p = 7.4
Semiperimeter: s = 3.7

Angle ∠ A = α = 26.55002729464° = 26°30'1″ = 0.46325170156 rad
Angle ∠ B = β = 89.91881550123° = 89°55'5″ = 1.56993678623 rad
Angle ∠ C = γ = 63.58215720413° = 63°34'54″ = 1.11097077757 rad

Height: ha = 2.83299971127
Height: hb = 1.26327518762
Height: hc = 1.41099985614

Median: ma = 2.91655145343
Median: mb = 1.5821802769
Median: mc = 1.99661525493

Inradius: r = 0.53992291796
Circumradius: R = 1.5880001612

Vertex coordinates: A[2.83; 0] B[0; 0] C[0.00220141343; 1.41099985614]
Centroid: CG[0.94440047114; 0.47699995205]
Coordinates of the circumscribed circle: U[1.415; 0.70329794406]
Coordinates of the inscribed circle: I[0.54; 0.53992291796]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.5499727054° = 153°29'59″ = 0.46325170156 rad
∠ B' = β' = 90.08218449877° = 90°4'55″ = 1.56993678623 rad
∠ C' = γ' = 116.4188427959° = 116°25'6″ = 1.11097077757 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    