# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 6.35   b = 3.18   c = 5.5

Area: T = 8.7454994311
Perimeter: p = 15.03
Semiperimeter: s = 7.515

Angle ∠ A = α = 89.93546454517° = 89°56'5″ = 1.57696556747 rad
Angle ∠ B = β = 30.05220861912° = 30°3'8″ = 0.52545078511 rad
Angle ∠ C = γ = 60.01332683571° = 60°48″ = 1.04774291277 rad

Height: ha = 2.75443289168
Height: hb = 5.5499996422
Height: hc = 3.18799979313

Median: ma = 3.17881401794
Median: mb = 5.72334735956
Median: mc = 4.2021779385

Inradius: r = 1.16436718977
Circumradius: R = 3.17550020655

Vertex coordinates: A[5.5; 0] B[0; 0] C[5.49663727273; 3.18799979313]
Centroid: CG[3.66554575758; 1.06599993104]
Coordinates of the circumscribed circle: U[2.75; 1.58768642399]
Coordinates of the inscribed circle: I[4.335; 1.16436718977]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90.06553545483° = 90°3'55″ = 1.57696556747 rad
∠ B' = β' = 149.9487913809° = 149°56'52″ = 0.52545078511 rad
∠ C' = γ' = 119.9876731643° = 119°59'12″ = 1.04774291277 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    