# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 18.79   b = 7.62   c = 14.04

Area: T = 47.56876276898
Perimeter: p = 40.45
Semiperimeter: s = 20.225

Angle ∠ A = α = 117.2221992034° = 117°13'19″ = 2.04659097167 rad
Angle ∠ B = β = 21.13881645657° = 21°8'17″ = 0.36989305695 rad
Angle ∠ C = γ = 41.64398434002° = 41°38'23″ = 0.72767523673 rad

Height: ha = 5.06330790516
Height: hb = 12.48549416509
Height: hc = 6.77660153404

Median: ma = 6.27111223078
Median: mb = 16.14223898479
Median: mc = 12.50113539267

Inradius: r = 2.35219222591
Circumradius: R = 10.56551915474

Vertex coordinates: A[14.04; 0] B[0; 0] C[17.52656873219; 6.77660153404]
Centroid: CG[10.5221895774; 2.25986717801]
Coordinates of the circumscribed circle: U[7.02; 7.89657502768]
Coordinates of the inscribed circle: I[12.605; 2.35219222591]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 62.77880079658° = 62°46'41″ = 2.04659097167 rad
∠ B' = β' = 158.8621835434° = 158°51'43″ = 0.36989305695 rad
∠ C' = γ' = 138.36601566° = 138°21'37″ = 0.72767523673 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   