You need to install ActiveX plug-in to be able to view this model.
This model provides study of properties of different kinds of symmetry such as:
- Central symmetry.
- Symmetry about a straight line.
To choose the kind of symmetry click the respective button. Here both the position of a point being the centre of symmetry and that of a straight line in your display can be changed by the mouse.
By using the button bar, you can choose the shape of a figure (triangle, rectangle, trapezoid) and also its size by virtue of the scale. You may draw a figure of general shape by means of the mouse if you choose the "pencil".
After clicking the button "DRAW" the model executes all the necessary constructions, i.e., it draws a figure symmetric to an initial one about a point or straight line.
The button "CLEAR" clears the field of a figure.
You can download it here.