# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 3.16   b = 7.07   c = 6.32

Area: T = 9.98655898679
Perimeter: p = 16.55
Semiperimeter: s = 8.275

Angle ∠ A = α = 26.54987130733° = 26°32'55″ = 0.46333624553 rad
Angle ∠ B = β = 90.08216208079° = 90°4'54″ = 1.57222208786 rad
Angle ∠ C = γ = 63.37696661188° = 63°22'11″ = 1.10660093197 rad

Height: ha = 6.32199935873
Height: hb = 2.82547778976
Height: hc = 3.16599967936

Median: ma = 6.51766901108
Median: mb = 3.53109736618
Median: mc = 4.47220968236

Inradius: r = 1.20767178088
Circumradius: R = 3.53550035869

Vertex coordinates: A[6.32; 0] B[0; 0] C[-0.00545015823; 3.16599967936]
Centroid: CG[2.10551661392; 1.05333322645]
Coordinates of the circumscribed circle: U[3.16; 1.585450319]
Coordinates of the inscribed circle: I[1.205; 1.20767178088]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 153.4511286927° = 153°27'5″ = 0.46333624553 rad
∠ B' = β' = 89.91883791921° = 89°55'6″ = 1.57222208786 rad
∠ C' = γ' = 116.6330333881° = 116°37'49″ = 1.10660093197 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    