Isosceles triangle calculator (b)

Please enter two properties of the isosceles triangle

Use symbols: a, b, h, T, p, A, B, C, r, R


You have entered side b and angle γ.

Acute isosceles triangle.

Sides: a = 9.35880020351   b = 9.35880020351   c = 3.25

Area: T = 14.97657285549
Perimeter: p = 21.96660040702
Semiperimeter: s = 10.98330020351

Angle ∠ A = α = 80° = 1.39662634016 rad
Angle ∠ B = β = 80° = 1.39662634016 rad
Angle ∠ C = γ = 20° = 0.34990658504 rad

Height: ha = 3.20106251973
Height: hb = 3.20106251973
Height: hc = 9.21658329569

Median: ma = 5.2132897517
Median: mb = 5.2132897517
Median: mc = 9.21658329569

Inradius: r = 1.36435369007
Circumradius: R = 4.75111821503

Vertex coordinates: A[3.25; 0] B[0; 0] C[1.625; 9.21658329569]
Centroid: CG[1.625; 3.0721944319]
Coordinates of the circumscribed circle: U[1.625; 4.46546508066]
Coordinates of the inscribed circle: I[1.625; 1.36435369007]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 100° = 1.39662634016 rad
∠ B' = β' = 100° = 1.39662634016 rad
∠ C' = γ' = 160° = 0.34990658504 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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