# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 14.42   b = 16.12   c = 7.21

Area: T = 51.98440973735
Perimeter: p = 37.75
Semiperimeter: s = 18.875

Angle ∠ A = α = 63.45495203235° = 63°26'58″ = 1.10774030385 rad
Angle ∠ B = β = 89.98217864929° = 89°58'54″ = 1.57704784411 rad
Angle ∠ C = γ = 26.56986931836° = 26°34'7″ = 0.4643711174 rad

Height: ha = 7.21099996357
Height: hb = 6.45496398726
Height: hc = 14.42199992714

Median: ma = 10.19548589985
Median: mb = 8.06220499874
Median: mc = 14.8632683977

Inradius: r = 2.75441243642
Circumradius: R = 8.06600004072

Vertex coordinates: A[7.21; 0] B[0; 0] C[0.00545839112; 14.42199992714]
Centroid: CG[2.40548613037; 4.80766664238]
Coordinates of the circumscribed circle: U[3.605; 7.20988543864]
Coordinates of the inscribed circle: I[2.755; 2.75441243642]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 116.5550479677° = 116°33'2″ = 1.10774030385 rad
∠ B' = β' = 90.01882135071° = 90°1'6″ = 1.57704784411 rad
∠ C' = γ' = 153.4311306816° = 153°25'53″ = 0.4643711174 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    