Missing square puzzle

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

In collections

Nobody has pulled it yet.

What Wikipedia says

The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry.

Excerpt from the Wikipedia article “Missing square puzzle”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Trekky0623 at English Wikipedia, Public domain, via Wikimedia Commons.