10 25 25 triangle

Acute isosceles triangle.

Sides: a = 10   b = 25   c = 25

Area: T = 122.4744487139
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 23.07439180656° = 23°4'26″ = 0.40327158416 rad
Angle ∠ B = β = 78.46330409672° = 78°27'47″ = 1.3699438406 rad
Angle ∠ C = γ = 78.46330409672° = 78°27'47″ = 1.3699438406 rad

Height: ha = 24.49548974278
Height: hb = 9.79879589711
Height: hc = 9.79879589711

Median: ma = 24.49548974278
Median: mb = 14.36114066163
Median: mc = 14.36114066163

Inradius: r = 4.08224829046
Circumradius: R = 12.7587759077

Vertex coordinates: A[25; 0] B[0; 0] C[2; 9.79879589711]
Centroid: CG[9; 3.26659863237]
Coordinates of the circumscribed circle: U[12.5; 2.55215518154]
Coordinates of the inscribed circle: I[5; 4.08224829046]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 156.9266081934° = 156°55'34″ = 0.40327158416 rad
∠ B' = β' = 101.5376959033° = 101°32'13″ = 1.3699438406 rad
∠ C' = γ' = 101.5376959033° = 101°32'13″ = 1.3699438406 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.


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