Triangle calculator SAS

Please enter two sides of the triangle and the included angle
°


Acute isosceles triangle.

Sides: a = 3.7   b = 3.7   c = 4.2444465629

Area: T = 6.43221959893
Perimeter: p = 11.6444465629
Semiperimeter: s = 5.82222328145

Angle ∠ A = α = 55° = 0.96599310886 rad
Angle ∠ B = β = 55° = 0.96599310886 rad
Angle ∠ C = γ = 70° = 1.22217304764 rad

Height: ha = 3.47768626969
Height: hb = 3.47768626969
Height: hc = 3.03108625639

Median: ma = 3.52656551502
Median: mb = 3.52656551502
Median: mc = 3.03108625639

Inradius: r = 1.10547644768
Circumradius: R = 2.25884329892

Vertex coordinates: A[4.2444465629; 0] B[0; 0] C[2.12222328145; 3.03108625639]
Centroid: CG[2.12222328145; 1.01102875213]
Coordinates of the circumscribed circle: U[2.12222328145; 0.77224295747]
Coordinates of the inscribed circle: I[2.12222328145; 1.10547644768]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 125° = 0.96599310886 rad
∠ B' = β' = 125° = 0.96599310886 rad
∠ C' = γ' = 110° = 1.22217304764 rad

Calculate another triangle




How did we calculate this triangle?

1. Calculation of the third side c of the triangle using a Law of Cosines


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