# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 240   b = 121   c = 302

Area: T = 13724.27437308
Perimeter: p = 663
Semiperimeter: s = 331.5

Angle ∠ A = α = 48.69901502551° = 48°41'25″ = 0.85498034352 rad
Angle ∠ B = β = 22.25334981628° = 22°15'13″ = 0.3888396813 rad
Angle ∠ C = γ = 109.0566351582° = 109°3'23″ = 1.90333924053 rad

Height: ha = 114.3698947757
Height: hb = 226.8477499682
Height: hc = 90.88992300052

Median: ma = 196.2711495638
Median: mb = 265.9733212937
Median: mc = 115.4110138203

Inradius: r = 41.40105240748
Circumradius: R = 159.7554901644

Vertex coordinates: A[302; 0] B[0; 0] C[222.1244172185; 90.88992300052]
Centroid: CG[174.7088057395; 30.29664100017]
Coordinates of the circumscribed circle: U[151; -52.16596453147]
Coordinates of the inscribed circle: I[210.5; 41.40105240748]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 131.3109849745° = 131°18'35″ = 0.85498034352 rad
∠ B' = β' = 157.7476501837° = 157°44'47″ = 0.3888396813 rad
∠ C' = γ' = 70.94436484179° = 70°56'37″ = 1.90333924053 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    