--- title: "3-D shapes (age 10+)" description: "Recognise, describe, and build simple 3-D shapes, including making nets" canonical: https://lightmysky.com/learn/mathematics/3-d-shapes-age-10-mt_REwgr0d_ss source: https://lightmysky.com/learn/mathematics/3-d-shapes-age-10-mt_REwgr0d_ss.md retrieved: 2026-10-19 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # 3-D shapes (age 10+) Recognise, describe, and build simple 3-D shapes, including making nets Subject: Mathematics · Area: Geometry · Ages 10 to 11 Page: https://lightmysky.com/learn/mathematics/3-d-shapes-age-10-mt_REwgr0d_ss ## Ready when they can - Identify which net will fold into a given 3-D shape - Construct the net of a triangular prism and fold it to verify - Describe a 3-D shape by naming its faces, edges, and vertices ## Lesson: 3-D shapes: predict, fold, and describe You can already tell a dice from a shoebox in a flat picture. That helps when you pack or build: look at the flat net first and guess which solid it will make before you fold it. Faces are the flat surfaces, edges are the lines where faces meet, and vertices are the corner points. *(drawing: A triangular prism has two triangle ends like this one, joined by three rectangle sides.)* **Example.** Zara looks at a net with two triangles and three rectangles attached in a row. She predicts it will fold into a triangular prism. She folds it, and she's right: the triangles become the two ends, and the rectangles wrap around to join them. Before you fold a net, count its flat pieces. A cube's net needs six squares. A triangular prism's net needs two triangles and three rectangles. A square pyramid needs one square and four triangles. If the count matches, your guess is probably right. **Recap.** A net is a flat plan you can predict before folding, and any 3-D shape can be described by its faces, edges, and vertices. ## Practice 18 questions on this page, each with its working shown. ## Needs first - [Nets of 3-D Shapes](https://lightmysky.com/learn/mathematics/nets-of-3-d-shapes-mt_vnJEztczji) - [3-D shapes (age 9+)](https://lightmysky.com/learn/mathematics/3-d-shapes-age-9-mt_wUSbRt3-qw) ## Opens up - [3-D shapes (age 11+)](https://lightmysky.com/learn/mathematics/3-d-shapes-age-11-mt_nRksLqt-iR)