1. Linear reflection
| Draw a straight line L on a piece of paper and plot a point P on one side of the line. |
| Place the long edge of the plastic sheet on the line L; hold the plastic perpendicular to the paper. |
| Viewed from the same side of the plastic sheet as the point P, the reflection P' of P is visible on the plastic. |
| Mark the apparent position of P' on the paper. |
| Remove the plastic sheet, then connect P and P' with a line segment. |
| This segment should be perpendicular to L. |
| On the same side of L as the point P, draw a picture or write a brief message. |
| Looking through the plastic sheet, trace the image of your drawing. |
| This illustrates the familiar property that reflection reverses orientation. |
| In this example, the reflection is in the red plastic sheet. Click the picture to enlarge, in a new window. |
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Return to Circle Inversions with Reflections.