10 10 12 triangle

Acute isosceles triangle.

Sides: a = 10   b = 10   c = 12

Area: T = 48
Perimeter: p = 32
Semiperimeter: s = 16

Angle ∠ A = α = 53.13301023542° = 53°7'48″ = 0.9277295218 rad
Angle ∠ B = β = 53.13301023542° = 53°7'48″ = 0.9277295218 rad
Angle ∠ C = γ = 73.74397952917° = 73°44'23″ = 1.28770022176 rad

Height: ha = 9.6
Height: hb = 9.6
Height: hc = 8

Median: ma = 9.84988578018
Median: mb = 9.84988578018
Median: mc = 8

Inradius: r = 3
Circumradius: R = 6.25

Vertex coordinates: A[12; 0] B[0; 0] C[6; 8]
Centroid: CG[6; 2.66766666667]
Coordinates of the circumscribed circle: U[6; 1.75]
Coordinates of the inscribed circle: I[6; 3]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 126.8769897646° = 126°52'12″ = 0.9277295218 rad
∠ B' = β' = 126.8769897646° = 126°52'12″ = 0.9277295218 rad
∠ C' = γ' = 106.2660204708° = 106°15'37″ = 1.28770022176 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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