Comical cats and dogs guide kids through the essential characteristics of squares, rectangles, parallelograms, rhomboids, and other quadrilaterals. Angles and degrees are explained in accessible terms and useful visuals. Kids will get a handle on geometric vocabulary and can try out plenty of hands-on activities that will help reinforce the concepts. David A. Adler and Edward Miller are a trusted team when it comes to math books for young people, having penned over 15 math-related books together. A glossary is included.