# Triangle calculator SSS - result

Please enter the triangle sides:

### Obtuse scalene triangle.

Sides: a = 8   b = 27   c = 29

Area: T = 107.331126292
Perimeter: p = 64
Semiperimeter: s = 32

Angle ∠ A = α = 15.91216001663° = 15°54'42″ = 0.27877098122 rad
Angle ∠ B = β = 67.70990296252° = 67°42'33″ = 1.18217455003 rad
Angle ∠ C = γ = 96.37993702084° = 96°22'46″ = 1.68221373411 rad

Height: ha = 26.833281573
Height: hb = 7.955046392
Height: hc = 7.40221560634

Median: ma = 27.73108492477
Median: mb = 16.43992822228
Median: mc = 13.6477344064

Inradius: r = 3.35441019662
Circumradius: R = 14.59903435532

Vertex coordinates: A[29; 0] B[0; 0] C[3.03444827586; 7.40221560634]
Centroid: CG[10.67881609195; 2.46773853545]
Coordinates of the circumscribed circle: U[14.5; -1.62111492837]
Coordinates of the inscribed circle: I[5; 3.35441019662]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 164.0888399834° = 164°5'18″ = 0.27877098122 rad
∠ B' = β' = 112.2910970375° = 112°17'27″ = 1.18217455003 rad
∠ C' = γ' = 83.62106297916° = 83°37'14″ = 1.68221373411 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   