Generate linear scan coordinates for a circular area

PiePrep.cs

using System;
using System.Collections.Generic;
using System.Drawing;

namespace PiePrep
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("\nEnter X center (mm): ");
            string x = Console.ReadLine();
            Console.Write("\nEnter Y center (mm): ");
            string y = Console.ReadLine();
            PointF center = new PointF(float.Parse(x), float.Parse(y));
            Console.Write("\nEnter radius (mm): ");
            float radius = float.Parse(Console.ReadLine());
            Console.Write("\nEnter number of slices: ");
            float slices = float.Parse(Console.ReadLine()) * 2;

            List<PointF> points = new List<PointF>();
            float dtheta = (float)(2 * Math.PI / slices);
            float theta = 0;
            for (int i = 0; i < slices; i++)
            {
                float xs = (float)(center.X + radius * Math.Cos(theta));
                float ys = (float)(center.Y + radius * Math.Sin(theta));
                points.Add(new PointF(xs, ys));
                theta += dtheta;
            }

            for (int i = 0; i < points.Count; i+=2)
            {
                Console.WriteLine(string.Format("\nScan {0}: [{1}, {2}] --> [{3}, {4}]", i / 2 + 1,
                    points[i].X.ToString("0.000"), points[i].Y.ToString("0.000"),
                    points[i + 1].X.ToString("0.000"), points[i + 1].Y.ToString("0.000")));
            }

            Console.ReadKey();
        }
    }
}