# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 2.83   b = 6.32   c = 5.66

Area: T = 8.00988593248
Perimeter: p = 14.81
Semiperimeter: s = 7.405

Angle ∠ A = α = 26.60215025216° = 26°36'5″ = 0.4644283805 rad
Angle ∠ B = β = 89.81773934937° = 89°49'3″ = 1.5687609242 rad
Angle ∠ C = γ = 63.58111039847° = 63°34'52″ = 1.11096996066 rad

Height: ha = 5.66599712543
Height: hb = 2.53444491534
Height: hc = 2.83299856271

Median: ma = 5.83298177502
Median: mb = 3.16880672341
Median: mc = 3.99658415885

Inradius: r = 1.08215475118
Circumradius: R = 3.16600160489

Vertex coordinates: A[5.66; 0] B[0; 0] C[0.00990194346; 2.83299856271]
Centroid: CG[1.89896731449; 0.94333285424]
Coordinates of the circumscribed circle: U[2.83; 1.4065987706]
Coordinates of the inscribed circle: I[1.085; 1.08215475118]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.3988497478° = 153°23'55″ = 0.4644283805 rad
∠ B' = β' = 90.18326065063° = 90°10'57″ = 1.5687609242 rad
∠ C' = γ' = 116.4198896015° = 116°25'8″ = 1.11096996066 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    