7 25 28 triangle

Obtuse scalene triangle.

Sides: a = 7   b = 25   c = 28

Area: T = 83.06662386292
Perimeter: p = 60
Semiperimeter: s = 30

Angle ∠ A = α = 13.72991326754° = 13°43'45″ = 0.24396185686 rad
Angle ∠ B = β = 57.95331689134° = 57°57'11″ = 1.01114736095 rad
Angle ∠ C = γ = 108.3187698411° = 108°19'4″ = 1.89105004755 rad

Height: ha = 23.73332110369
Height: hb = 6.64552990903
Height: hc = 5.93333027592

Median: ma = 26.31106442338
Median: mb = 16.13222658049
Median: mc = 11.8744342087

Inradius: r = 2.7698874621
Circumradius: R = 14.7477267003

Vertex coordinates: A[28; 0] B[0; 0] C[3.71442857143; 5.93333027592]
Centroid: CG[10.57114285714; 1.97877675864]
Coordinates of the circumscribed circle: U[14; -4.63548553438]
Coordinates of the inscribed circle: I[5; 2.7698874621]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 166.2710867325° = 166°16'15″ = 0.24396185686 rad
∠ B' = β' = 122.0476831087° = 122°2'49″ = 1.01114736095 rad
∠ C' = γ' = 71.68223015888° = 71°40'56″ = 1.89105004755 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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