Surfaces of the Solids

Definition of surfaces of the solids or 3-D figures:

When we look at the faces of these figures or shapes, we find that some are flat and some are curved. These faces are not only seen but can also be touched. These are called the surfaces of the solids or 3-D figures.

There are two types of surfaces: (i) Plane surfaces and (ii) Curved surface

(i) Plane surfaces:

Flat surfaces are called plane surfaces. The objects having plane surfaces are called plane objects.

The surfaces of book, match box, almirah, table, etc., are the examples of plane surfaces.

(ii) Curved surface:

The surfaces which are not flat, are called curved surface.

The surface of a ball, or an apple, or an orange is curved or is a spherical surface.

Spherical surfaces are formed by only one surface.

There are some objects which have both plane and curved types of surfaces.

Drum and clock are such objects having both types of surfaces.

Related Concepts

Basic Shapes

Common Solid Figures

Points, Lines and Shapes

Line-Segment, Ray and Line

Types of Lines

Geometrical Design and Models








3rd Grade Math Lessons

From Surfaces of the Solids to HOME PAGE


New! Comments

Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.



Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.



Share this page: What’s this?

Recent Articles

  1. Rupees and Paise | Paise Coins | Rupee Coins | Rupee Notes

    Dec 04, 23 02:14 PM

    Different types of Indian Coins
    Money consists of rupees and paise; we require money to purchase things. 100 paise make one rupee. List of paise and rupees in the shape of coins and notes:

    Read More

  2. Months of the Year | List of 12 Months of the Year |Jan, Feb, Mar, Apr

    Dec 04, 23 01:50 PM

    Months of the Year
    There are 12 months in a year. The months are January, February, march, April, May, June, July, August, September, October, November and December. The year begins with the January month. December is t…

    Read More

  3. The Story about Seasons | Spring | Summer | Autumn | Winter

    Dec 04, 23 01:49 PM

    The Four Seasons
    Kids let’s enjoy the story about seasons. Here we will discuss about the four seasons and the duration. Some months are too hot and some are too cold. The period of hot months is called the hot

    Read More