# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 9   b = 22   c = 24

Area: T = 98.9621798185
Perimeter: p = 55
Semiperimeter: s = 27.5

Angle ∠ A = α = 22.01553695404° = 22°55″ = 0.38442406845 rad
Angle ∠ B = β = 66.3932876283° = 66°23'34″ = 1.1598774291 rad
Angle ∠ C = γ = 91.59217541766° = 91°35'30″ = 1.59985776781 rad

Height: ha = 21.99215107078
Height: hb = 8.99765271077
Height: hc = 8.24768165154

Median: ma = 22.57876438098
Median: mb = 14.40548602909
Median: mc = 11.76986022959

Inradius: r = 3.59986108431
Circumradius: R = 12.00546323105

Vertex coordinates: A[24; 0] B[0; 0] C[3.60441666667; 8.24768165154]
Centroid: CG[9.20113888889; 2.74989388385]
Coordinates of the circumscribed circle: U[12; -0.33334620086]
Coordinates of the inscribed circle: I[5.5; 3.59986108431]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 157.985463046° = 157°59'5″ = 0.38442406845 rad
∠ B' = β' = 113.6077123717° = 113°36'26″ = 1.1598774291 rad
∠ C' = γ' = 88.40882458234° = 88°24'30″ = 1.59985776781 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    