# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 35   b = 33   c = 3.98

Area: T = 58.39765179441
Perimeter: p = 71.98
Semiperimeter: s = 35.99

Angle ∠ A = α = 117.2221857038° = 117°13'19″ = 2.04659073606 rad
Angle ∠ B = β = 56.97545023943° = 56°58'28″ = 0.99443926565 rad
Angle ∠ C = γ = 5.80436405676° = 5°48'13″ = 0.10112926365 rad

Height: ha = 3.33769438825
Height: hb = 3.53991829057
Height: hc = 29.34549838915

Median: ma = 15.6989811981
Median: mb = 18.65993193874
Median: mc = 33.95664412152

Inradius: r = 1.62325762141
Circumradius: R = 19.68796836603

Vertex coordinates: A[3.98; 0] B[0; 0] C[19.07554271357; 29.34549838915]
Centroid: CG[7.68551423786; 9.78216612972]
Coordinates of the circumscribed circle: U[1.99; 19.57988112246]
Coordinates of the inscribed circle: I[2.99; 1.62325762141]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 62.77881429619° = 62°46'41″ = 2.04659073606 rad
∠ B' = β' = 123.0255497606° = 123°1'32″ = 0.99443926565 rad
∠ C' = γ' = 174.1966359432° = 174°11'47″ = 0.10112926365 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    