# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 12.35   b = 8.75   c = 14.48

Area: T = 53.81328057087
Perimeter: p = 35.58
Semiperimeter: s = 17.79

Angle ∠ A = α = 58.15221526879° = 58°9'8″ = 1.01549465315 rad
Angle ∠ B = β = 37.00216987954° = 37°6″ = 0.64658014728 rad
Angle ∠ C = γ = 84.84661485167° = 84°50'46″ = 1.48108446493 rad

Height: ha = 8.71546244063
Height: hb = 12.33000698763
Height: hc = 7.43327079708

Median: ma = 10.24662590734
Median: mb = 12.72661865851
Median: mc = 7.88219350416

Inradius: r = 3.02548907088
Circumradius: R = 7.26993895969

Vertex coordinates: A[14.48; 0] B[0; 0] C[9.86329281768; 7.43327079708]
Centroid: CG[8.11443093923; 2.47875693236]
Coordinates of the circumscribed circle: U[7.24; 0.65330123367]
Coordinates of the inscribed circle: I[9.04; 3.02548907088]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 121.8487847312° = 121°50'52″ = 1.01549465315 rad
∠ B' = β' = 142.9988301205° = 142°59'54″ = 0.64658014728 rad
∠ C' = γ' = 95.15438514833° = 95°9'14″ = 1.48108446493 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   