14 25 28 triangle
Acute scalene triangle.
Sides: a = 14 b = 25 c = 28Area: T = 174.7555364724
Perimeter: p = 67
Semiperimeter: s = 33.5
Angle ∠ A = α = 29.95437680794° = 29°57'14″ = 0.52327918764 rad
Angle ∠ B = β = 63.07661351049° = 63°4'34″ = 1.1010886237 rad
Angle ∠ C = γ = 86.97700968156° = 86°58'12″ = 1.51879145402 rad
Height: ha = 24.96550521035
Height: hb = 13.9880429178
Height: hc = 12.48325260518
Median: ma = 25.6032734229
Median: mb = 18.26988259064
Median: mc = 14.64658185159
Inradius: r = 5.21765780515
Circumradius: R = 14.02195982187
Vertex coordinates: A[28; 0] B[0; 0] C[6.33992857143; 12.48325260518]
Centroid: CG[11.44664285714; 4.16108420173]
Coordinates of the circumscribed circle: U[14; 0.74110359058]
Coordinates of the inscribed circle: I[8.5; 5.21765780515]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.0466231921° = 150°2'46″ = 0.52327918764 rad
∠ B' = β' = 116.9243864895° = 116°55'26″ = 1.1010886237 rad
∠ C' = γ' = 93.03299031844° = 93°1'48″ = 1.51879145402 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
