4 7 8 triangle

Acute scalene triangle.

Sides: a = 4   b = 7   c = 8

Area: T = 13.99877676792
Perimeter: p = 19
Semiperimeter: s = 9.5

Angle ∠ A = α = 29.99547255274° = 29°59'41″ = 0.52435067187 rad
Angle ∠ B = β = 61.02884677763° = 61°1'42″ = 1.06551477001 rad
Angle ∠ C = γ = 88.97768066963° = 88°58'37″ = 1.55329382348 rad

Height: ha = 6.99988838396
Height: hb = 3.9999362194
Height: hc = 3.49994419198

Median: ma = 7.24656883731
Median: mb = 5.26878268764
Median: mc = 4.06220192023

Inradius: r = 1.47334492294
Circumradius: R = 4.00106379077

Vertex coordinates: A[8; 0] B[0; 0] C[1.93875; 3.49994419198]
Centroid: CG[3.31325; 1.16664806399]
Coordinates of the circumscribed circle: U[4; 0.07114399626]
Coordinates of the inscribed circle: I[2.5; 1.47334492294]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 150.0055274473° = 150°19″ = 0.52435067187 rad
∠ B' = β' = 118.9721532224° = 118°58'18″ = 1.06551477001 rad
∠ C' = γ' = 91.02331933037° = 91°1'23″ = 1.55329382348 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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