 Well, here we are in Office 2007, but it works just as well in the old version of Word. We've got a proof of Pythagoras theorem all set up here. And I'll just do Ctrl A and then delete and get rid of it and start it all from scratch. Okay, for this I need to insert a shape and I want to insert a triangle and there it goes. And I want some more triangles like that. And one of the best ways is to press Ctrl and drag because that gives you another one. So Ctrl Drag, Ctrl Drag, fantastic. Okay, now I want to have a look at the rotation tool which is hiding up here, but it's all on the drawing toolbar in the old system. So select that one, rotate it once, that's perfect. Select this one and rotate it once and rotate it again. Unfortunately, you can't double click and do multiple operations in the new Office. Once, twice and three times and I think I shouldn't bother to do the last one four times. So we're all set. Let's put this one here and this one here. It's all snapping to the grid, which is something you need to get set up as well, but that's for another day. Now I just press Shift and select all of these and to give it some fill, maybe that color would do nicely. Now I just want to do a square around the whole lot. Again, it will snap so it can make it easily a square and fill that with some other color. That'll do. And then a right click order, send that to the back. Perfect. So what I want to do now is move this fellow, I'm going to move this fellow up to here and this one up to here. And that basically does it, but I'll just undo those because we haven't really decided whether this is indeed the square on the hypotenuse. Why is that a rectangle? Well, it is because if you think about it, this angle equals that angle and these two add up to 90 degrees. So that is nice, but it just needs to be said. Whereas if I move this one up to here and this one up to here, that's quite a nice couple of translations there and that's slightly more obvious that these two are indeed the sums of the squares on the other two sides. Well, sometimes it's quite nice to put them down here, then you really do see two separate squares. Well, if you didn't quite get that, don't worry, we can just undo and I'm just going to press control and then lots of z's and pressing z, z, z, z, z, all the way back to the start. And then if I want to redo it, I just press control and y for redo and there we have it up to the finishing point. So there we are, job done.