Equilateral triangle calculator

Please enter one property of the equilateral triangle

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


You have entered side a, b and c (as equilateral triangle).

Equilateral triangle.

Sides: a = 36.891   b = 36.891   c = 36.891

Area: T = 589.3076853061
Perimeter: p = 110.673
Semiperimeter: s = 55.33765

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

Height: ha = 31.9498543171
Height: hb = 31.9498543171
Height: hc = 31.9498543171

Median: ma = 31.9498543171
Median: mb = 31.9498543171
Median: mc = 31.9498543171

Inradius: r = 10.65495143903
Circumradius: R = 21.29990287807

Vertex coordinates: A[36.891; 0] B[0; 0] C[18.44655; 31.9498543171]
Centroid: CG[18.44655; 10.65495143903]
Coordinates of the circumscribed circle: U[18.44655; 10.65495143903]
Coordinates of the inscribed circle: I[18.44655; 10.65495143903]

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 b c (as equilateral triangle)


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