15 24 24 triangle
Acute isosceles triangle.
Sides: a = 15 b = 24 c = 24Area: T = 170.9855196728
Perimeter: p = 63
Semiperimeter: s = 31.5
Angle ∠ A = α = 36.42199137286° = 36°25'12″ = 0.63656474079 rad
Angle ∠ B = β = 71.79900431357° = 71°47'24″ = 1.25329726229 rad
Angle ∠ C = γ = 71.79900431357° = 71°47'24″ = 1.25329726229 rad
Height: ha = 22.79880262304
Height: hb = 14.2498766394
Height: hc = 14.2498766394
Median: ma = 22.79880262304
Median: mb = 16.0165617378
Median: mc = 16.0165617378
Inradius: r = 5.42881014834
Circumradius: R = 12.63326725432
Vertex coordinates: A[24; 0] B[0; 0] C[4.68875; 14.2498766394]
Centroid: CG[9.56325; 4.7549588798]
Coordinates of the circumscribed circle: U[12; 3.94877101698]
Coordinates of the inscribed circle: I[7.5; 5.42881014834]
Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 143.5880086271° = 143°34'48″ = 0.63656474079 rad
∠ B' = β' = 108.2109956864° = 108°12'36″ = 1.25329726229 rad
∠ C' = γ' = 108.2109956864° = 108°12'36″ = 1.25329726229 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
