hello, I am Erwin Bonsma
in this video I want to show a triangle that I created using 3d printing
you can see the triangle in front of you
you may already notice that there is
something funny going on with its shape
it appears to be impossible
the triangle is in fact called an impossible triangle for that reason
so hopefully you can see
why it's called impossible
if not then you may want to skip this
video because
it will not be that interesting I expect
but if you do see why it is impossible
you may want to know how this illusion has been realized
and that's what I want to show you next
so spoiler alert
if you do not want to know how this illusion works
you should also stop this video
but if you do, then I am now going to show you how
basically the shape is not quite as you might have expected
it is very curvy
and that is how the entire triangle
can meet up at all the corners
still at every corner it appears that
the edges are going off in different directions
creating this illusion
so it is an interesting shape
hopefully you enjoyed the illusion
and in fact if you want to
you can actually buy this triangle at my Shapeways shop
so the link is at the bottom of this video
okay, bye for now
