I Was Thinking..
Thoughts, opinions, and ideas about Mathematics and other things from a retired teacher.
Pages
Home
Mr. VL's Web Site
Derivation of Quadratic Formula
Showing posts with label
spiral illusion
.
Show all posts
Showing posts with label
spiral illusion
.
Show all posts
Monday, November 17, 2014
A quick GeoGebra-based illusion
This sketch was created to show how easily our eyes and brain can mislead us.
A simple rotation is perceived differently if key anchor segments are removed.
The complete file is
here
.
Older Posts
Home
Subscribe to:
Posts (Atom)