Applet instructions

Aspect of the applet

Remark: In the figures marked as , if you pass the mouse over the figure you will see an animated gif.

Handling the figures

Insert

  • To insert a figure, you should use the lateral menu which contains the forms of the available figures.
  • You can insert an unlimited number of figures with the same form.
  • After inserting a figure, an example of the chosen figure will be shown, together with a second figure. This second figure is the inversion of the first figure with respect to the inversion circle.

Select

  • A figure is selected when it is surrounded by a violet rectangle.
  • When a figure is inserted, it becomes automatically selected.
  • To select a figure, you should click on it and, in the case of superposition of figures, you should click successively over them until you select the figure you want. It is not possible to select more than one figure simultaneously.

Transform

  • First you should select the figure you would like to transform.
  • You can apply over each figure one of the three isometric transformations: translations, rotations and reflections. (isometric="preserves distances").

Translations:
Move the mouse maintaining the left button pressed.

Rotations:
Keep pressing the key Ctrl and move the mouse around the figure keeping the left button pressed.

Reflections:
click the right mouse button.

Show/hide inside

  • Select the figure you want to change.
  • In the top menu there is a button whose function is to show/hide inside the figures and which also indicates whether or not the selected figure is or not with a visible interior.

To color

  • Select the figure you want to change.
  • In the top menu click the button with the symbol symbol. A window appears and you can choose the colour you want for the figure.

Delete

  • Select the figure you want to wipe out.
  • In the top menu click the button with the symbol Delete.

Modify circle inversion

Center

  • In the top menu click the button with the symbol symbol. It will appear, immediately, a sub-menu. You can change the centre of the circle of inversion in 3 different ways:

It takes the center of the inversion circle to the upper left corner of the applet.

It allows the user to choose the inversion centre. After clicking this button you must move the mouse (without pressing any of the buttons) to where you want the inversion center and then just click on one of the mouse buttons.

Radius

  • In the top menu click the button with the symbol symbol. A sub-menu appears and then use the buttons with the symbols symbol and symbol to increase and decrease the radius of the inversion circle, respectively.