# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 2   b = 6.16   c = 6.47

Area: T = 6.16599636054
Perimeter: p = 14.63
Semiperimeter: s = 7.315

Angle ∠ A = α = 18.00660359906° = 18°22″ = 0.31442646133 rad
Angle ∠ B = β = 72.19109186394° = 72°11'27″ = 1.26599692203 rad
Angle ∠ C = γ = 89.803304537° = 89°48'11″ = 1.567735882 rad

Height: ha = 6.16599636054
Height: hb = 21.9999881836
Height: hc = 1.90441618564

Median: ma = 6.23772469889
Median: mb = 3.66766128784
Median: mc = 3.24215389863

Inradius: r = 0.84221002878
Circumradius: R = 3.23550191132

Vertex coordinates: A[6.47; 0] B[0; 0] C[0.61216924266; 1.90441618564]
Centroid: CG[2.36105641422; 0.63547206188]
Coordinates of the circumscribed circle: U[3.235; 0.01111203782]
Coordinates of the inscribed circle: I[1.155; 0.84221002878]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 161.9943964009° = 161°59'38″ = 0.31442646133 rad
∠ B' = β' = 107.8099081361° = 107°48'33″ = 1.26599692203 rad
∠ C' = γ' = 90.197695463° = 90°11'49″ = 1.567735882 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    