Profile Photo

CBSE / NCERT Solutions Class 8 Maths – Chapter 16 – Visualizing Shapes

Class-8th-Maths-Chapter-16-Visualizing-shapes,8th class maths, class 8 maths, NCERT solutions class 8

CBSE / NCERT Solutions Class 8 Maths – Chapter 16 – Visualizing Shapes

The topic – Visualizing shapes from Class 8th Maths discussed here. We have discussed in earlier blogs that various types of figures exist like one-dimensional, multi-dimensional like two dimensional and three-dimensional figures. We come across many of them in our day to day life.

Live tuition classes for 8th Class Maths are available on our website takshilalearning.com.

A figure having the only length like a line segment is known as one dimensional

class-8-maths, 8th class maths, NCERT solutions class 8

A figure having only length and breadth like a polygon is known as two dimensional

class-8-maths

A figure having length, height and breadth like a cuboid is known as three dimensional

class-8-maths, 8th class maths, NCERT solutions class 8

Visualization of 2-D shapes and their representation on paper is very convenient. We will now understand how to visualize 3-D shapes.

Polyhedron

A three-dimensional solid shape composed of polygons is called a polyhedron. We will understand the words related to polyhedron-

Faces:-The polygons forming a polyhedron are called its face.

Edges:-The line segments where the faces of a polyhedron intersect are called its edges.

Vertices:-The corners where the edges of a polyhedron intersect are called its vertices.the point, where three or more edges meet, is called a vertex.

Examples of polyhedron

  • Cuboid – A cuboid has 6 faces,8 vertex, and 12 edges

Visualizing-shapes-maths-class-8, 8th class maths, class 8 maths, NCERT solutions class 8

 

  • Cube – A cuboid has 6 faces,8 vertex, and 12 edges

Visualizing shapes maths-class-8, 8th class maths, class 8 maths, NCERT solutions class 8

 

  • Square pyramid-A square pyramid has 5 faces ,8 edges, and 5 vertices

Visualizing shapes-maths class-8,8th class maths, class 8 maths, NCERT solutions class 8

 

  • Triangular Pyramid-A triangular pyramid has 4 face, 6 edges, and 4 vertex.

Visualizing-shapes maths-class 8, 8th class maths, class 8 maths, NCERT solutions class 8

 

  • Triangular prism-A triangular prism has 5 faces, 9 edges, and 6 vertices.

Visualizing-shapes-maths-class-8, 8th class maths, class 8 maths, NCERT solutions class 8

 

We come across many of the shapes that are actually not polyhedron but they are made up of polygons.eg:- a sphere, a cone, a cylinder.

Watch and understand 2D -3D shapes with 2D-3D animated videos, for demo click 8th Class Maths

Regular polyhedron:-If the faces of a polyhedron are made up of regular polygons and the same number of faces meets at each vertex, a polyhedron is called a regular polyhedron. Eg:-Cube

A cuboid is not a regular polyhedron since its faces are not congruent rectangles.

Convex polyhedron:-if in any polyhedron the line segment joining any two points on its surface lie entirely inside or on the polyhedron, a polyhedron is called a convex polyhedron, in other cases, it is a concave polyhedron. Cube, cuboid, pyramid, and prism are examples of convex polyhedrons.

In the next article, we will try to understand prism and the various types of the prism. Also, we will understand pyramid and platonic solids.

For chapter wise study material, maths solutions, question bank, keynotes, practice papers of Class 8 Maths, click on NCERT Maths solutions for Class 8.

For more details Call us : 8800999280/8800999284 or fill the form for free Demo classes:

February 22, 2018

No comments, be the first one to comment !

    Leave a Reply

    Your email address will not be published. Required fields are marked *

    © 2015-17 Takshila Learning. All Rights Reserved.
    Request Callback
    close slider
    For course & fee related queries, Leave your details and our counsellor will get back to you or Call us at 8800-999-280
    • This field is for validation purposes and should be left unchanged.

    Login