Triangle calculator SSS - result

Please enter the triangle sides:

Acute isosceles triangle.

Sides: a = 22   b = 29   c = 29

Area: T = 295.161097303
Perimeter: p = 80
Semiperimeter: s = 40

Angle ∠ A = α = 44.58219407495° = 44°34'55″ = 0.7788101653 rad
Angle ∠ B = β = 67.70990296252° = 67°42'33″ = 1.18217455003 rad
Angle ∠ C = γ = 67.70990296252° = 67°42'33″ = 1.18217455003 rad

Height: ha = 26.833281573
Height: hb = 20.35659291745
Height: hc = 20.35659291745

Median: ma = 26.833281573
Median: mb = 21.26661703181
Median: mc = 21.26661703181

Inradius: r = 7.37990243257
Circumradius: R = 15.67111097423

Vertex coordinates: A[29; 0] B[0; 0] C[8.34548275862; 20.35659291745]
Centroid: CG[12.44882758621; 6.78553097248]
Coordinates of the circumscribed circle: U[14.5; 5.94442140402]
Coordinates of the inscribed circle: I[11; 7.37990243257]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135.418805925° = 135°25'5″ = 0.7788101653 rad
∠ B' = β' = 112.2910970375° = 112°17'27″ = 1.18217455003 rad
∠ C' = γ' = 112.2910970375° = 112°17'27″ = 1.18217455003 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     