CLASS VI MATHS SYMMETRY
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Symmetry is present in many areas of everyday life such as art, architecture, textiles, car manufacturing, and rangoli. There are three main types of symmetry: line symmetry, rotational symmetry, and mirror reflection. Line symmetry occurs when a line can be drawn to divide a figure into two identical halves. The number of lines of symmetry an object has can be zero, one, two, or multiple. Rotational symmetry is when an object looks the same after being rotated around a fixed center point. The angle of rotation and number of rotations before the object looks the same again determine its rotational symmetry.
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CLASS VI MATHS SYMMETRY
- 1. topic:
- 2. SYMMETRY HAS PLENTY OF APPLICATIONS IN EVERYDAY LIFE AS IN ART, ARCHITECTURE, TEXTTILE TECHNOLOGY, CAR MANUFACTURES, RANGOLI ETC. Introduction
- 3. SYMMETRY Line Symmetry Rotatinol Symmetry Mirror Reflecation
- 4. A FIGURE HAS LINE SYMMETRY IF A LINE CAN BE DRAWN DIVIDING THE FIGURE INTO TWO IDENTICAL PARTS. THE LINE IS CALLED A LINE OF SYMMETRY. A FIGURE MAY HAVE NO LINE OF SYMMETRY, ONLY ONE OF SYMMETRY, TWO LINES OF SYMMETRY OR MULTIPLE LINES OF SYMMETRY. Line Symmetry
- 15. Equilateral triangle Square Rectangle Find number of lines of symmetry ?
- 17. Rotational Symmetry If, after a rotation, an object looks exactly the same, we say that it has a rotational symmetry. • This fixed point is the centre of rotation . • The angle by which the object rotates is the angle of rotation. • A half-turn means rotation by 180 degree; a quarter- turn means rotation by 90 degree. Rotation may be clockwise or anticlock wise. • In a complete turn ( of 360 degree ), the number of times an object looks exactly the same is called the order of rotational symmetry.