TED-Ed: Pizza physics (New York-style) - Colm Kelleher

The video tutorial explores the challenges of eating pizza without making a mess and introduces a solution by folding the pizza slice. It delves into the mathematical concept of isometry, explaining how shapes can transform without stretching, and the physics of thin sheets, which are easy to bend but hard to stretch. These concepts are applied to understand why folding a pizza slice helps prevent the tip from drooping, as it requires significant force to stretch the pizza into a non-isometric shape like a droopy taco. The tutorial concludes by highlighting the importance of understanding mathematical properties in everyday scenarios.

Why is it difficult to stretch a thin sheet compared to bending it?

Summarize the conclusion about folding pizza at the crust.