Class 6 Chapter 13: Symmetry

Class 6 Chapter 13: Symmetry

Important Concepts and Formulas

1.      If a symmetrical object (shape) is folded along the line of symmetry, both parts overlap each other exactly.

2.      Some of the capital letters of the English alphabet are symmetrical such as A, B, C, D, E, H, I, M, O, T, U, V, W, X.

3.      A regular polygon has as many lines of symmetry as the number of its sides. For example, equilateral triangle–3, square–4, pentagon–5 and hexagon–6, etc.

4.      Non-symmetrical shapes are called asymmetrical shapes.

5.      A figure may have more than one line of symmetry.

6.      The concept of symmetry can be horizontal, vertical or slanting.

7.      Line of symmetry is very closely related to mirror reflection.

8.      Images are as far behind the mirror line as the objects (shapes) are in the front.

        To see more shapes with lines of symmetry ------ Click Here!

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