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In Class 7 Maths Chapter 13, Visualising Solid Shapes, we will learn about Visualising some Solid Shapes to determine the number of their faces, edges, and vertices. In the later part of the chapter, we will also learn to draw some solid shapes on a flat surface. Let us now have a look at the NCERT Class 7 Maths Chapter 13 Visualising Solid Shapes Notes and Solutions (PDF available).
Table of Contents
NCERT Solutions Class 7 Maths Chapter 13 – PDF Available
Check the topic-wise notes for NCERT Solutions Maths Class 7 Chapter 13, Visualising Solid Shapes below. You can also download the PDF of the notes and take a printout to study later when you need quick revision before going to the eš„am hall.
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Topic 1: Faces, Edges and Vertices
- Vertices: The corners of a solid shape are its vertices.
- Edges: The line segments that form the skeleton of the solid shape are called its edges.
- Faces: The flat surfaces that are the skin of the solid shape are its faces.
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Topic 2: Oblique Sketches
The oblique sketches give a clear idea of how a particular solid shape looks when seen from the front. You do not see certain faces. In this sketch, the lengths are not equal, as they should be in a given solid shape. Still, you are able to recognize it. Such a sketch of a solid is called an oblique sketch.
An oblique sketch does not have proportional lengths. Still, it conveys all important aspects of the appearance of the solid.
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Topic 3: Isometric Sketches
The sketches in which measurements also agree with those of the solid are called the Isometric Sketches. These can be drawn using the isometric dot sheets.
Class 7 Maths Chapter 13, Visualising Solid Shapes Exercise Solutions – PDF Available!
Below we have provided solutions for NCERT Solutions Class 7 Maths Chapter 13, Visualising Solid Shapes. Go through for answers to some important questions.
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Eš„ercise 13.1 Solutions
Q 1. Match the nets with appropriate solids:
 | (i) |
 | (ii) |
 | (iii) |
 | (iv) |
Solutions. The answers are given below.
- The net in (ii) is the correct net for the given cube shape.
- The net in (iii) is the correct net for the given cylinder shape.
- The net in (iv) is the correct net for the given cone shape.
- The net in (i) is the correct net for the given prism shape.
Eš„ercise 13.4 Solutions
Q 1. Examine if the following are true statements:
- The cube can cast a shadow in the shape of a rectangle.
- The cube can cast a shadow in the shape of a hexagon
Solutions. The answers are given below.
- False, each face of a cube is of the shape of a square which means a cube will cast a shadow of square shape when put under a lamp.
- False, each face of a cube is of the shape of a square which means a cube will cast a shadow of square shape when put under a lamp. Even if the lamp is put just above one of its vertices, the shape of the shadow will not be a hexagon.
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FAQs
Ans: The flat surfaces that are the skin of the solid shape are its faces.
Ans: The line segments that form the skeleton of the solid shape are called its edges.
Ans: The corners of a solid shape are its vertices.
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This was all about NCERT Solutions Class 7 Maths Chapter 13, Visualising Solid Shapes in which we learned about the faces, edges and vertices of solid shapes. We also learned to draw the oblique and isometric sketches of certain solid shapes on a flat surface. Download the NCERT Solutions Class 7 Maths Chapter 13 Notes and Solutions PDF to ace your eš„am preparations. Follow the CBSE Class 7 Maths Solutions and Notes for more such chapter notes and important questions and answers for preparation for CBSE Class 7 Maths.