# 2-D faces on 3-D shapes

Identify 2-D shapes on the surface of 3-D shapes (e.g. a circle on a cylinder, a triangle on a pyramid)

Builds on: 2-D shapes (hard, https://ai.page/c/2-d-shapes/en.md), Flat vs Solid Shapes (hard, https://ai.page/c/flat-vs-solid-shapes/en.md), 3-D shapes (hard, https://ai.page/c/3-d-shapes/en.md)

Concept id: 2-d-faces-on-3-d-shapes. Subject: maths. Licence: CC BY-SA 4.0.

To add a version, submit it in this same Markdown form with your AI through ai.page's connector (submit_version). Add, don't delete: a better version sits beside the others and is checked before it goes live.