6 26 28 triangle
Obtuse scalene triangle.
Sides: a = 6 b = 26 c = 28Area: T = 75.8954663844
Perimeter: p = 60
Semiperimeter: s = 30
Angle ∠ A = α = 12.03545697281° = 12°2'4″ = 0.21100428658 rad
Angle ∠ B = β = 64.62330664748° = 64°37'23″ = 1.12878852827 rad
Angle ∠ C = γ = 103.3422363797° = 103°20'32″ = 1.80436645051 rad
Height: ha = 25.29882212813
Height: hb = 5.83880510649
Height: hc = 5.42110474174
Median: ma = 26.85114431642
Median: mb = 15.52441746963
Median: mc = 12.64991106407
Inradius: r = 2.53298221281
Circumradius: R = 14.38883633538
Vertex coordinates: A[28; 0] B[0; 0] C[2.57114285714; 5.42110474174]
Centroid: CG[10.19904761905; 1.80770158058]
Coordinates of the circumscribed circle: U[14; -3.32203915432]
Coordinates of the inscribed circle: I[4; 2.53298221281]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 167.9655430272° = 167°57'56″ = 0.21100428658 rad
∠ B' = β' = 115.3776933525° = 115°22'37″ = 1.12878852827 rad
∠ C' = γ' = 76.65876362029° = 76°39'28″ = 1.80436645051 rad
Calculate another triangle
How did we calculate this triangle?
Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS.
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

6. Inradius

7. Circumradius
