# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 0.34   b = 0.37   c = 0.13

Area: T = 0.02220726075
Perimeter: p = 0.84
Semiperimeter: s = 0.42

Angle ∠ A = α = 66.60436517245° = 66°36'13″ = 1.16224530164 rad
Angle ∠ B = β = 92.8533004976° = 92°51'11″ = 1.62105906572 rad
Angle ∠ C = γ = 20.54333432994° = 20°32'36″ = 0.35985489799 rad

Height: ha = 0.13298388674
Height: hb = 0.11993113917
Height: hc = 0.34395785763

Median: ma = 0.2199089023
Median: mb = 0.17989553017
Median: mc = 0.34993207695

Inradius: r = 0.05325538273
Circumradius: R = 0.18552295887

Vertex coordinates: A[0.13; 0] B[0; 0] C[-0.01769230769; 0.34395785763]
Centroid: CG[0.03876923077; 0.11331928588]
Coordinates of the circumscribed circle: U[0.065; 0.17334502825]
Coordinates of the inscribed circle: I[0.05; 0.05325538273]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 113.3966348275° = 113°23'47″ = 1.16224530164 rad
∠ B' = β' = 87.1476995024° = 87°8'49″ = 1.62105906572 rad
∠ C' = γ' = 159.4576656701° = 159°27'24″ = 0.35985489799 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    