5 28 28 triangle

Acute isosceles triangle.

Sides: a = 5   b = 28   c = 28

Area: T = 69.72204238369
Perimeter: p = 61
Semiperimeter: s = 30.5

Angle ∠ A = α = 10.24550321996° = 10°14'42″ = 0.17988095439 rad
Angle ∠ B = β = 84.87774839002° = 84°52'39″ = 1.48113915549 rad
Angle ∠ C = γ = 84.87774839002° = 84°52'39″ = 1.48113915549 rad

Height: ha = 27.88881695348
Height: hb = 4.98800302741
Height: hc = 4.98800302741

Median: ma = 27.88881695348
Median: mb = 14.44395290782
Median: mc = 14.44395290782

Inradius: r = 2.28659155356
Circumradius: R = 14.05661394505

Vertex coordinates: A[28; 0] B[0; 0] C[0.44664285714; 4.98800302741]
Centroid: CG[9.48221428571; 1.66600100914]
Coordinates of the circumscribed circle: U[14; 1.25550124509]
Coordinates of the inscribed circle: I[2.5; 2.28659155356]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 169.75549678° = 169°45'18″ = 0.17988095439 rad
∠ B' = β' = 95.12325160998° = 95°7'21″ = 1.48113915549 rad
∠ C' = γ' = 95.12325160998° = 95°7'21″ = 1.48113915549 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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