# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 2.94   b = 1.29   c = 2.16

Area: T = 1.26774276762
Perimeter: p = 6.39
Semiperimeter: s = 3.195

Angle ∠ A = α = 114.5332742052° = 114°31'58″ = 1.99989734501 rad
Angle ∠ B = β = 23.52659686628° = 23°31'33″ = 0.41106056129 rad
Angle ∠ C = γ = 41.94112892856° = 41°56'29″ = 0.73220135906 rad

Height: ha = 0.86221956981
Height: hb = 1.96550041491
Height: hc = 1.17435441446

Median: ma = 1.00219730535
Median: mb = 2.49877139548
Median: mc = 1.99768600352

Inradius: r = 0.39766909785
Circumradius: R = 1.61658744506

Vertex coordinates: A[2.16; 0] B[0; 0] C[2.6965625; 1.17435441446]
Centroid: CG[1.61985416667; 0.39111813815]
Coordinates of the circumscribed circle: U[1.08; 1.20219360383]
Coordinates of the inscribed circle: I[1.905; 0.39766909785]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 65.46772579484° = 65°28'2″ = 1.99989734501 rad
∠ B' = β' = 156.4744031337° = 156°28'27″ = 0.41106056129 rad
∠ C' = γ' = 138.0598710714° = 138°3'31″ = 0.73220135906 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    