Class 7 Mathematics Chapter 15 Revision Notes
CBSE Class 7 Mathematics Chapter 15 Revision Notes – Visualising Solid Shapes
To make the chapter “Visualising Solid Shapes” easier for students to revise, the Class 7 Mathematics Chapter 15 Notes have been specially designed. The notes will help the students understand the basic as well as advanced concepts of the “Visualising Solid Shapes” chapter in a better way.
To consolidate their learning, the students can rely on the Class 7 Mathematics Chapter 15 Revision Notes. The revision notes have been prepared based on the CBSE guidelines and prescribed syllabus. Extramarks recommends that the students regularly revise the Class 7 Mathematics Chapter 15 Revision Notes.
Class 7 Mathematics Chapter 15 Notes cover important topics of the chapter like dimensions of 1D and 2D figures, shapes, and different views of a solid shape. Students can read these notes to know more about various solid shapes like cubes, cuboids, cylinders, spheres, and cones.
Revision Notes for CBSE Class 7 Maths Chapter 15
Access Class 7 Mathematics Chapter 15 – Visualising Solid Shapes Notes in 30 Minutes
Plane Figures
Plane figures refer to those figures that are flat as well as 2 dimensions. They do not have any thickness. For example, triangles, circles, rectangles, squares, etc.
Solid Shapes
Solid Shapes are those shapes that are 3 dimensional. They have volume and occupy space. For example, hemisphere, cone, sphere, cuboid, cube, etc.
3D Shapes
A 3D shape is 3-dimensional and is not flat. A 3D shape has vertices, edges, and faces.
Faces
Face refers to the flat surface of a 3D shape. For example, a cube has 6 faces.
Edges
A line segment which connects one vertex to another vertex is called edge.
For example, a cylinder has 2 edges.
Vertices
Vertices are certain points in a 3D shape wherein the edges connect between the faces.
Drawing Solids on a Flat Surface
Oblique sketches and isometric sketches are two ways of drawing solids on a flat surface. Let us read more and know about them in detail.
Oblique Sketches
- Oblique sketch aids in representing 3D objects easily in a pictorial format.
- These sketches are drawn on plain paper to showcase the perspective of a 3D object.
- There is no measurement mentioned with respect to a 3D object.
Isometric Sketches
- There are specific isometric sheets on which isometric sketches are made.
- These are also pictorial representations of 3D objects.
Viewing Different Sections of a Solid
The following are ways for viewing different sections of a solid.
Shadow casting is done to get a 2D view of a 3D object.
Slicing and cutting aid in getting a cross-sectional view of a solid.
- Viewing solid from different angles
There are different views for viewing the solid from different angles. They include top view, side view, and front view.