The math workbook "Angles" defines an angle as a figure formed by two rays (or line segments) with a common endpoint known as the vertex. Worksheets focus on identifying and naming angles using different methods, such as vertex labeling and degree measurement. Students learn to recognize various types of angles, including acute, right, obtuse, and straight angles, and practice measuring angles using a protractor. Engaging activities to go with this workbook might include drawing angles, estimating angles, and using real-world examples to highlight their presence in everyday life.