NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes

 

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NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes: In our daily life, we come across many objects. If we take a plain sheet of paper it is in the shape of a rectangle and it has two dimensions. We can measure the length and breadth of paper and we can find the area and perimeter of paper, which we have studied in the previous chapters of  NCERT Solutions for Class 7 Maths. We have come across shapes like triangle, circle and parallelograms in NCERT Solutions for Class 7, these are plane figures. A cricket ball, a book, an ice cream cone, a pipe, etc are solid figures and are three dimensional. If we take a book we can say it is in the shape of a cuboid and we can measure length, breadth, and height also and using this quantity we will find the volume or capacity of solids, which we will study in NCERT Solutions of coming class. Here in NCERT Solutions for Class 7 Maths Chapter 15 we will discuss certain solid shapes and how to visualize it.

We have seen dice which are solid in shape. This shape is known as a cube. A cube has equal length, breadth, and height. It consists of 6 faces, 12 edges and 8 vertices as shown in the figure below.

 

A ball is in the shape of a sphere. A water-carrying pipe is in the shape of a cylinder. The shadow of a sphere will be circular in shape, the shadow of a cone will be triangular in shape, the shadow of the cylinder will be rectangular in shape. The horizontal crosssection of the cylinder is rectangular in shape and vertical crossection is circular in shape as shown in the figure below. Can you find out horizontal and vertical crossection of sphere, cube, and cone also?

The main topics of the NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes are:

15.1 Introduction: Plane Figures And Solid Shapes

15.2 Faces, Edges And Vertices

15.3 Nets For Building 3-d Shapes

15.4 Drawing Solids On A Flat Surface

15.4.1 Oblique Sketches

15.4.2 Isometric Sketches

15.5 Viewing Different Sections Of A Solid

15.5.1 One Way To View An Object Is By Cutting Or Slicing

15.5.2 Another Way Is By Shadow Play

15.5.3 A Third Way Is By Looking At It From Certain Angles To Get Different Views

Doing all the questions and activities of NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes will be interesting.

Here are the  NCERT Solutions for Class 7 Maths Chapter 15 Visualising Solid Shapes:

 

NCERT Solutions for Class 7 Maths - Chapter-wise 

Chapter No.

Chapter Name

Chapter 1

Integers

Chapter 2

Fractions and Decimals

Chapter 3

Data Handling

Chapter 4

Simple Equations

Chapter 5

Lines and Angles

Chapter 6

The Triangle and its Properties

Chapter 7

Congruence of Triangles

Chapter 8

Comparing Quantities

Chapter 9

Rational Numbers

Chapter 10

Practical Geometry

Chapter 11

Perimeter and Area

Chapter 12

Algebraic Expressions

Chapter 13

Exponents and Powers

Chapter 14

Symmetry

 

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