This chapter expands on geometry by focusing on the properties and measurements of two-dimensional figures. Students master the area formulas for rectangles, triangles, parallelograms, circles, and various quadrilaterals. A significant portion of the honors curriculum is dedicated to the study of similar triangles and proportionate lengths. Students learn to identify similar figures and use scale factors to solve for unknown dimensions in complex diagrams. This unit encourages students to apply their algebraic skills to geometric proofs and problem-solving. It provides a comprehensive look at how shapes relate to one another through size and proportion.