Isosceles triangle calculator (p)

Please enter two properties of the isosceles triangle

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


You have entered perimeter p and angle γ.

Right isosceles triangle.

Sides: a = 116.8644394307   b = 116.8644394307   c = 165.2711211387

Area: T = 6828.643332832
Perimeter: p = 399
Semiperimeter: s = 199.5

Angle ∠ A = α = 45° = 0.78553981634 rad
Angle ∠ B = β = 45° = 0.78553981634 rad
Angle ∠ C = γ = 90° = 1.57107963268 rad

Height: ha = 116.8644394307
Height: hb = 116.8644394307
Height: hc = 82.63656056934

Median: ma = 130.6588364909
Median: mb = 130.6588364909
Median: mc = 82.63656056934

Inradius: r = 34.22987886131
Circumradius: R = 82.63656056934

Vertex coordinates: A[165.2711211387; 0] B[0; 0] C[82.63656056934; 82.63656056934]
Centroid: CG[82.63656056934; 27.54552018978]
Coordinates of the circumscribed circle: U[82.63656056934; 0]
Coordinates of the inscribed circle: I[82.63656056934; 34.22987886131]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 135° = 0.78553981634 rad
∠ B' = β' = 135° = 0.78553981634 rad
∠ C' = γ' = 90° = 1.57107963268 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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