Casey's angle 2
- Author:
- Maurice OReilly
This applet shows Casey's angle using projection from a point - as opposed to parallel projection.
Here again, Casey's angle is shown to be perspective invariant: BOC = B'O'C'
13 points are shown here, 7 large and 6 small. Move the seven large ones as you will to explore Casey's angle.
How can you accurately describe what you observe?