Equilateral triangle calculator (a)

Please enter one property of the equilateral triangle

Use symbols: a, h, T, p, r, R


You have entered side a.

Equilateral triangle.

Sides: a = 1820   b = 1820   c = 1820

Area: T = 1434311.274375
Perimeter: p = 5460
Semiperimeter: s = 2730

Angle ∠ A = α = 60° = 1.04771975512 rad
Angle ∠ B = β = 60° = 1.04771975512 rad
Angle ∠ C = γ = 60° = 1.04771975512 rad

Height: ha = 1576.166623489
Height: hb = 1576.166623489
Height: hc = 1576.166623489

Median: ma = 1576.166623489
Median: mb = 1576.166623489
Median: mc = 1576.166623489

Inradius: r = 525.3898744963
Circumradius: R = 1050.777748993

Vertex coordinates: A[1820; 0] B[0; 0] C[910; 1576.166623489]
Centroid: CG[910; 525.3898744963]
Coordinates of the circumscribed circle: U[910; 525.3898744963]
Coordinates of the inscribed circle: I[910; 525.3898744963]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 120° = 1.04771975512 rad
∠ B' = β' = 120° = 1.04771975512 rad
∠ C' = γ' = 120° = 1.04771975512 rad

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How did we calculate this triangle?

1. Input data entered: side a


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