Students can go through AP Board 7th Class Maths Notes Chapter 14 Understanding 3D and 2D Shapes to understand and remember the concepts easily.
AP State Board Syllabus 7th Class Maths Notes Chapter 14 Understanding 3D and 2D Shapes
→ A net is a sort of skeleton – outline in 2-D, which, when folded, results in a 3-D shape. Each shape can also have more than one net according to the way we cut it.
→ 3-D shapes can be visualised by drawing their nets on 2-D surfaces.
→ Oblique sketches are drawn on a grid paper to visualise 3-D shapes.
→ Isometric sketches can be drawn on a dot isometric paper to visualise 3-D shapes.