26 29 29 triangle

Acute isosceles triangle.

Sides: a = 26   b = 29   c = 29

Area: T = 336.9998516317
Perimeter: p = 84
Semiperimeter: s = 42

Angle ∠ A = α = 53.26662374983° = 53°15'58″ = 0.93296712245 rad
Angle ∠ B = β = 63.36768812508° = 63°22'1″ = 1.10659607145 rad
Angle ∠ C = γ = 63.36768812508° = 63°22'1″ = 1.10659607145 rad

Height: ha = 25.92329627936
Height: hb = 23.24112769874
Height: hc = 23.24112769874

Median: ma = 25.92329627936
Median: mb = 23.41547389479
Median: mc = 23.41547389479

Vertex coordinates: A[29; 0] B[0; 0] C[11.65551724138; 23.24112769874]
Centroid: CG[13.55217241379; 7.74770923291]
Coordinates of the circumscribed circle: U[14.5; 7.2721545367]
Coordinates of the inscribed circle: I[13; 8.0243774198]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 126.7343762502° = 126°44'2″ = 0.93296712245 rad
∠ B' = β' = 116.6333118749° = 116°37'59″ = 1.10659607145 rad
∠ C' = γ' = 116.6333118749° = 116°37'59″ = 1.10659607145 rad

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    