The applet ‘bending light’ I really like to use in my lessons on a high school in Deventer (Holland). https://phet.colorado.edu/sims/html/bending-light/latest/bending-light_nl.html When I’m using the ‘prism’ part I would like to pick a prism with a 90degree angle. But it isn’t there… The only triangle has three times 60degrees.
Is it possible to create one?