# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 360   b = 250   c = 207.06

Area: T = 25163.90655073
Perimeter: p = 817.06
Semiperimeter: s = 408.53

Angle ∠ A = α = 103.5332761179° = 103°31'58″ = 1.80769875663 rad
Angle ∠ B = β = 42.46768934928° = 42°28'1″ = 0.74111871145 rad
Angle ∠ C = γ = 344.000345328° = 34°1″ = 0.59334179728 rad

Height: ha = 139.799947504
Height: hb = 201.3111244058
Height: hc = 243.0599069905

Median: ma = 142.4322165609
Median: mb = 265.7299038308
Median: mc = 292.1165626251

Inradius: r = 61.59662242854
Circumradius: R = 185.1440180194

Vertex coordinates: A[207.06; 0] B[0; 0] C[265.5660329373; 243.0599069905]
Centroid: CG[157.5440109791; 81.02196899684]
Coordinates of the circumscribed circle: U[103.53; 153.4887541586]
Coordinates of the inscribed circle: I[158.53; 61.59662242854]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 76.46772388208° = 76°28'2″ = 1.80769875663 rad
∠ B' = β' = 137.5333106507° = 137°31'59″ = 0.74111871145 rad
∠ C' = γ' = 1465.999654672° = 145°59'59″ = 0.59334179728 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    