14 18 18 triangle

Acute isosceles triangle.

Sides: a = 14   b = 18   c = 18

Area: T = 116.0821867662
Perimeter: p = 50
Semiperimeter: s = 25

Angle ∠ A = α = 45.77107609523° = 45°46'15″ = 0.79988504798 rad
Angle ∠ B = β = 67.11546195238° = 67°6'53″ = 1.17113710869 rad
Angle ∠ C = γ = 67.11546195238° = 67°6'53″ = 1.17113710869 rad

Height: ha = 16.58331239518
Height: hb = 12.89879852958
Height: hc = 12.89879852958

Median: ma = 16.58331239518
Median: mb = 13.37990881603
Median: mc = 13.37990881603

Inradius: r = 4.64332747065
Circumradius: R = 9.76989675643

Vertex coordinates: A[18; 0] B[0; 0] C[5.44444444444; 12.89879852958]
Centroid: CG[7.81548148148; 4.29993284319]
Coordinates of the circumscribed circle: U[9; 3.79990429417]
Coordinates of the inscribed circle: I[7; 4.64332747065]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 134.2299239048° = 134°13'45″ = 0.79988504798 rad
∠ B' = β' = 112.8855380476° = 112°53'7″ = 1.17113710869 rad
∠ C' = γ' = 112.8855380476° = 112°53'7″ = 1.17113710869 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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