+33661 I assume you mean it's inscribed in a circle.
If so, chop it up into isosceles triangles, where the apex of each triangle is at the centre of the circle, and the two equal sides of each triangle are radii, length r, of the circle.
The base of a triangle with apex angle, A, is given by 2r*sin(A/2).
If it's a regular polygon, with n sides, then A = 360°/n.
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+33661 I assume you mean it's inscribed in a circle.
If so, chop it up into isosceles triangles, where the apex of each triangle is at the centre of the circle, and the two equal sides of each triangle are radii, length r, of the circle.
The base of a triangle with apex angle, A, is given by 2r*sin(A/2).
If it's a regular polygon, with n sides, then A = 360°/n.
.
