# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 175   b = 168   c = 7.47

Area: T = 223.5770401071
Perimeter: p = 350.47
Semiperimeter: s = 175.235

Angle ∠ A = α = 159.1276931221° = 159°7'37″ = 2.77772888784 rad
Angle ∠ B = β = 20.00216310726° = 20°6″ = 0.3499094318 rad
Angle ∠ C = γ = 0.87114377068° = 0°52'17″ = 0.01552094572 rad

Height: ha = 2.5555090298
Height: hb = 2.66215523937
Height: hc = 59.85882064447

Median: ma = 80.52111180374
Median: mb = 91.01986818736
Median: mc = 171.4955043004

Inradius: r = 1.2765831889
Circumradius: R = 245.5880361877

Vertex coordinates: A[7.47; 0] B[0; 0] C[164.4454504685; 59.85882064447]
Centroid: CG[57.30548348951; 19.95327354816]
Coordinates of the circumscribed circle: U[3.735; 245.5521957668]
Coordinates of the inscribed circle: I[7.235; 1.2765831889]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 20.87330687794° = 20°52'23″ = 2.77772888784 rad
∠ B' = β' = 159.9988368927° = 159°59'54″ = 0.3499094318 rad
∠ C' = γ' = 179.1298562293° = 179°7'43″ = 0.01552094572 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    