# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 149   b = 176   c = 27.55

Area: T = 443.4411236946
Perimeter: p = 352.55
Semiperimeter: s = 176.275

Angle ∠ A = α = 10.539916654° = 10°32'21″ = 0.18439431565 rad
Angle ∠ B = β = 167.5232749481° = 167°31'22″ = 2.92438235504 rad
Angle ∠ C = γ = 1.93880839794° = 1°56'17″ = 0.03438259466 rad

Height: ha = 5.95222313684
Height: hb = 5.03991049653
Height: hc = 32.19217413391

Median: ma = 101.5743870902
Median: mb = 61.12328373851
Median: mc = 162.4776919515

Inradius: r = 2.51656218236
Circumradius: R = 407.309943573

Vertex coordinates: A[27.55; 0] B[0; 0] C[-145.4810898367; 32.19217413391]
Centroid: CG[-39.31102994555; 10.73105804464]
Coordinates of the circumscribed circle: U[13.775; 407.0766437306]
Coordinates of the inscribed circle: I[0.275; 2.51656218236]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 169.461083346° = 169°27'39″ = 0.18439431565 rad
∠ B' = β' = 12.47772505193° = 12°28'38″ = 2.92438235504 rad
∠ C' = γ' = 178.0621916021° = 178°3'43″ = 0.03438259466 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    