(Images returned from a Wylio search on polyhedra).
Do you or your students ever need images? Care should be taken with copyright when using images from the Internet.
There are many sources of copyright free images. The above images (and many more) were returned as a result of searching Wylio for polyhedron. This Diigo list (clicking on the green links takes you direct to each website) has several sites which can be searched for copyright free images.
Note the end of the list has some sites specific to Mathematics, these are not necessarily copyright free (except those from the Pics4Learning site) but there are many interesting images to show students such as those from the MAA’s ‘Found Math’ project.
See this post for information for students.
And of course you can always take your own photos! More holiday pictures!