# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 242.2   b = 186.2   c = 311.99

Area: T = 22526.56330028
Perimeter: p = 740.39
Semiperimeter: s = 370.195

Angle ∠ A = α = 50.8544077579° = 50°51'15″ = 0.88875710918 rad
Angle ∠ B = β = 36.66000025223° = 36°36' = 0.63987905503 rad
Angle ∠ C = γ = 92.54659198986° = 92°32'45″ = 1.61552310115 rad

Height: ha = 186.0166209767
Height: hb = 241.9610934509
Height: hc = 144.4065673277

Median: ma = 226.5810868676
Median: mb = 263.3099115015
Median: mc = 149.436627396

Inradius: r = 60.85105328348
Circumradius: R = 156.1499128274

Vertex coordinates: A[311.99; 0] B[0; 0] C[194.4422386134; 144.4065673277]
Centroid: CG[168.8110795378; 48.13552244255]
Coordinates of the circumscribed circle: U[155.995; -6.9366154254]
Coordinates of the inscribed circle: I[183.995; 60.85105328348]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 129.1465922421° = 129°8'45″ = 0.88875710918 rad
∠ B' = β' = 143.4399997478° = 143°24' = 0.63987905503 rad
∠ C' = γ' = 87.45440801014° = 87°27'15″ = 1.61552310115 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    