Part of the series “My Path to Math,” this volume is a clever introduction to a very important mathematical concepts. The explanations are clear and should be understood by the target readers. Two kids and their aunt go to the country fair and make observations along the way. Utility wires are compared to lines. Spokes on a Ferris wheel are compared to rays. Edges on a cotton candy stand are poles on a carousel are used to illustrate perpendicular, intersecting, and parallel lines. Angles are defined as two rays and a vertex.