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# C:\Documents And Settings\Gallery\My Documents\Atsp Office\Tanmaya\Symmetry

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A presentation on the mathematical topic SYMMETRY......can be in handy if as a homework given by ur math teacher.

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### C:\Documents And Settings\Gallery\My Documents\Atsp Office\Tanmaya\Symmetry

1. 1. SYMMETRY
2. 2. What is symmetry? <ul><li>A figure is symmetrical when there exists a line which divides it into two parts, such that if the figure is folded along that line, the two parts exactly overlap each other </li></ul><ul><li>The line which divides figure into two equal is called line of symmetry or a axis of symmetry. </li></ul><ul><li>Line segment has one line of symmetry i.e. perpendicular bisector that divides the line into two equal parts. </li></ul>
3. 3. SOME SYMMETRICAL SHAPES
4. 4. GEOMETRICAL FIGURES WITH ONE AXIS OF SYMMETRY <ul><li>LINE SEGMENT: A line segment has one axis of symmetry which is the line passing through the mid point of the line segment and is perpendicular to the line segment . </li></ul><ul><li>ANGLE: An angle has only one axis of symmetry which is the line that divides the angle into two equal halves. </li></ul>
5. 5. <ul><li>ISOSCELES TRIANGLE: An isosceles triangle is a triangle with two equal sides . </li></ul><ul><li>SEMICIRCLE: A semicircle has one line of symmetry which is the line passing through the mid point of the diameter and is also perpendicular to it . </li></ul>
6. 6. MIRROR OR REFLECTION SYMMETRY <ul><li>When the object and its reflection are symmetrical , the mirror line is the axis of symmetry. </li></ul>
7. 7. PROPERTIES OF MIRROR REFLECTION <ul><li>The length of the image remains the same as that of the object. </li></ul><ul><li>The angle also remains unchanged. </li></ul><ul><li>The image will be as far behind the mirror as the object is in front of the mirror. </li></ul>
8. 8. THANK U AND HAVE A GR8 DAY!