Inversion 
App instructions
Insert/hide figures
- To insert a figure, click the corresponding button (for example,
). - To delete a figure, deselect the button you had clicked on.
Select/drag figures
- To select a figure, click the red point (
) on the figure. By moving this point, you drag the entire image. - Remark: in particular, it is possible to change the center of the inversion circle by dragging it.
Change the shape of a figure
- To change the shape of a figure, drag the black points (
) on it.
Show/hide inside
- When clicking on the button corresponding to a given figure (whose interior is visible), a new button should appear:
. Clicking on it, you have the option to hide/show the inside.
Radius
