9 23 28 triangle

Obtuse scalene triangle.

Sides: a = 9   b = 23   c = 28

Area: T = 93.9154855055
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 16.95774262942° = 16°57'27″ = 0.29659629215 rad
Angle ∠ B = β = 48.19896851042° = 48°11'23″ = 0.84110686706 rad
Angle ∠ C = γ = 114.8532888602° = 114°51'10″ = 2.00545610615 rad

Height: ha = 20.876996779
Height: hb = 8.16765091352
Height: hc = 6.70882039325

Median: ma = 25.22439965113
Median: mb = 17.32877234512
Median: mc = 10.44403065089

Inradius: r = 3.13304951685
Circumradius: R = 15.42988690447

Vertex coordinates: A[28; 0] B[0; 0] C[6; 6.70882039325]
Centroid: CG[11.33333333333; 2.23660679775]
Coordinates of the circumscribed circle: U[14; -6.48545971347]
Coordinates of the inscribed circle: I[7; 3.13304951685]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 163.0432573706° = 163°2'33″ = 0.29659629215 rad
∠ B' = β' = 131.8110314896° = 131°48'37″ = 0.84110686706 rad
∠ C' = γ' = 65.14771113984° = 65°8'50″ = 2.00545610615 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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