Angles and Polygons

This topic applies the concepts of angles and polygons in different contexts. Learners will explore shapes in the environment, identify angles related to straight lines, and calculate angle sizes between intersecting lines and within triangles. They will describe properties of interior and exterior angles of regular polygons and calculate interior, exterior, and sum of interior angles. Mastery of this topic develops geometric reasoning and measurement skills, which are essential for solving problems in mensuration, construction, and trigonometry, all of which are assessed in the Zambian CBC and ECZ examinations.