Understanding Elementary Shapes (2-D and 3-D)

This CTET Paper 2 chapter builds Understanding Elementary Shapes (2-D and 3-D) for future Classes VI-VIII maths teachers: measuring line segments, angle types (acute, right, obtuse, straight, reflex, complete), perpendicular and parallel lines, classifying triangles and quadrilaterals, naming polygons, describing cube, cuboid, cylinder, cone and sphere by faces, edges and vertices, light nets, angle-class and solid-versus-plane pedagogy with TLM, and hard CTET stems. Sibling topics Basic Geometrical Ideas and Mensuration stay one-line contrasts only.