---
title: "2-D shapes (age 10+)"
description: "Draw 2-D shapes using given dimensions and angles, using a ruler and protractor accurately"
canonical: https://lightmysky.com/learn/mathematics/2-d-shapes-age-10-mt_hdrMoiTgqu
source: https://lightmysky.com/learn/mathematics/2-d-shapes-age-10-mt_hdrMoiTgqu.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`.

# 2-D shapes (age 10+)

Draw 2-D shapes using given dimensions and angles, using a ruler and protractor accurately

Subject: Mathematics · Area: Geometry · Ages 10 to 11
Page: https://lightmysky.com/learn/mathematics/2-d-shapes-age-10-mt_hdrMoiTgqu

## Ready when they can

- Draw a triangle with sides 5 cm, 7 cm and an included angle of 60°
- Construct a rectangle with given length and width using a ruler and set square
- Draw a regular pentagon given the side length and interior angle

## Lesson: Drawing shapes to exact measurements

You already know how to measure an angle with a protractor, and you know what makes a polygon regular or irregular. Now you put both skills to work: drawing a shape so it matches exact side lengths and angles, not just roughly the right shape.

*(drawing: This triangle is defined by two sides and the angle between them. Once you know those three numbers, there is only one triangle that fits.)*

**Example.** To draw it: draw the 7 cm side first with your ruler. At one end, place your protractor on that line and mark 60°. Draw the 5 cm side from that mark. Join the two open ends, and the triangle is complete.

*(drawing: The same idea works for other shapes. A rectangle needs equal opposite sides and four 90° corners, checked with a set square. A regular pentagon needs equal sides and equal angles, here each one 108°, checked with a protractor at every corner.)*

**Tip.** Keep your pencil point sharp so your ruler and protractor marks are exact. If one mark is even 1 mm or 1° off, the whole shape drifts by the time you draw the last side.

**Recap.** Measure carefully, mark each angle with your protractor, and draw each side to its exact length. That's how numbers become an accurate shape.

## Practice

18 questions on this page, each with its working shown.

## Needs first

- [Measuring angles](https://lightmysky.com/learn/mathematics/measuring-angles-mt_4MFUAsbx_6)
- [Regular and irregular polygons](https://lightmysky.com/learn/mathematics/regular-and-irregular-polygons-mt_8H2kO4k2B9)

## Opens up

- [Accurate drawing and scale diagrams](https://lightmysky.com/learn/mathematics/accurate-drawing-and-scale-diagrams-mt_Jf8xcX4UTq)