# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 100   b = 40   c = 91.65

Area: T = 18332.99999869
Perimeter: p = 231.65
Semiperimeter: s = 115.825

Angle ∠ A = α = 90.00221685187° = 90°8″ = 1.57108341746 rad
Angle ∠ B = β = 23.57881784603° = 23°34'41″ = 0.41215168458 rad
Angle ∠ C = γ = 66.4219653021° = 66°25'11″ = 1.15992416332 rad

Height: ha = 36.66599999737
Height: hb = 91.65499999344
Height: hc = 409.9999999714

Median: ma = 49.99986124807
Median: mb = 93.80875756536
Median: mc = 60.82881955593

Inradius: r = 15.82655989526
Circumradius: R = 500.0000000358

Vertex coordinates: A[91.65; 0] B[0; 0] C[91.65215139116; 409.9999999714]
Centroid: CG[61.10105046372; 13.33333333238]
Coordinates of the circumscribed circle: U[45.825; 20.00217343893]
Coordinates of the inscribed circle: I[75.825; 15.82655989526]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 89.99878314813° = 89°59'52″ = 1.57108341746 rad
∠ B' = β' = 156.422182154° = 156°25'19″ = 0.41215168458 rad
∠ C' = γ' = 113.5880346979° = 113°34'49″ = 1.15992416332 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    