# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 8.6   b = 8.25   c = 7.07

Area: T = 27.00107988148
Perimeter: p = 23.92
Semiperimeter: s = 11.96

Angle ∠ A = α = 67.79444919112° = 67°47'40″ = 1.18332370986 rad
Angle ∠ B = β = 62.64223073688° = 62°38'32″ = 1.09333145146 rad
Angle ∠ C = γ = 49.563320072° = 49°33'48″ = 0.86550410404 rad

Height: ha = 6.27992555383
Height: hb = 6.54656481975
Height: hc = 7.63881326209

Median: ma = 6.36766082022
Median: mb = 6.70549850857
Median: mc = 7.65495114223

Inradius: r = 2.25875918742
Circumradius: R = 4.64444598125

Vertex coordinates: A[7.07; 0] B[0; 0] C[3.95220792079; 7.63881326209]
Centroid: CG[3.67440264026; 2.5466044207]
Coordinates of the circumscribed circle: U[3.535; 3.01224378748]
Coordinates of the inscribed circle: I[3.71; 2.25875918742]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 112.2065508089° = 112°12'20″ = 1.18332370986 rad
∠ B' = β' = 117.3587692631° = 117°21'28″ = 1.09333145146 rad
∠ C' = γ' = 130.437679928° = 130°26'12″ = 0.86550410404 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   