Points and lines in the plane -- Circles and spheres -- The sphere by itself: can we distribute points on it evenly? -- Conics and quadrics -- Plane curves -- Smooth surfaces -- Convexity and convex sets -- Polygons, polyhedra, polytopes -- Lattices, packings and tilings in the plane -- Lattices and packings in higher dimensions -- Geometry and dynamics I: billiards -- Geometry and dynamics II: geodesic flow on a surface.