13 18 29 triangle

Obtuse scalene triangle.

Sides: a = 13   b = 18   c = 29

Area: T = 78.23304288624
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 17.44215938563° = 17°26'30″ = 0.30444132396 rad
Angle ∠ B = β = 24.5220294972° = 24°31'13″ = 0.42879598808 rad
Angle ∠ C = γ = 138.0388111172° = 138°2'17″ = 2.40992195332 rad

Height: ha = 12.03554505942
Height: hb = 8.69222698736
Height: hc = 5.39552019905

Median: ma = 23.24332785983
Median: mb = 20.5911260282
Median: mc = 6.02107972894

Inradius: r = 2.60876809621
Circumradius: R = 21.68659350597

Vertex coordinates: A[29; 0] B[0; 0] C[11.82875862069; 5.39552019905]
Centroid: CG[13.60991954023; 1.79884006635]
Coordinates of the circumscribed circle: U[14.5; -16.12554388905]
Coordinates of the inscribed circle: I[12; 2.60876809621]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 162.5588406144° = 162°33'30″ = 0.30444132396 rad
∠ B' = β' = 155.4879705028° = 155°28'47″ = 0.42879598808 rad
∠ C' = γ' = 41.96218888284° = 41°57'43″ = 2.40992195332 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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