17 18 30 triangle

Obtuse scalene triangle.

Sides: a = 17   b = 18   c = 30

Area: T = 135.1333036301
Perimeter: p = 65
Semiperimeter: s = 32.5

Angle ∠ A = α = 30.03326039163° = 30°1'57″ = 0.52441678213 rad
Angle ∠ B = β = 32.00109601588° = 32°3″ = 0.55985221186 rad
Angle ∠ C = γ = 117.9666435925° = 117°57'59″ = 2.05989027137 rad

Height: ha = 15.89880042707
Height: hb = 15.01547818113
Height: hc = 9.00988690868

Median: ma = 23.2332520311
Median: mb = 22.66105383872
Median: mc = 9.02877350426

Inradius: r = 4.15879395785
Circumradius: R = 16.98332637734

Vertex coordinates: A[30; 0] B[0; 0] C[14.41766666667; 9.00988690868]
Centroid: CG[14.80655555556; 3.00329563623]
Coordinates of the circumscribed circle: U[15; -7.96443736976]
Coordinates of the inscribed circle: I[14.5; 4.15879395785]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 149.9677396084° = 149°58'3″ = 0.52441678213 rad
∠ B' = β' = 147.9999039841° = 147°59'57″ = 0.55985221186 rad
∠ C' = γ' = 62.0343564075° = 62°2'1″ = 2.05989027137 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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