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Geometry & MeasuresIntroduction

Walking the Edge

Part of Perimeter — GCSE Mathematics

This introduction covers Walking the Edge within Perimeter for GCSE Mathematics. Revise Perimeter in Geometry & Measures for GCSE Mathematics with 10 exam-style questions and 2 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 1 of 4 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 4

Practice

10 questions

Recall

2 flashcards

Walking the Edge

Imagine walking all the way around a shape - the total distance you walk is the perimeter! If you're putting a fence around a garden, you need to know the perimeter. It's simply adding up ALL the sides.

Keep building this topic

Read this section alongside the surrounding pages in Perimeter. That gives you the full topic sequence instead of a single isolated revision point.

Key FactsMethod: Finding PerimeterWorked Example

Practice Questions for Perimeter

What is the perimeter of a shape?

  • A. The space inside a shape
  • B. The total distance around the outside of a shape
  • C. Half the sum of all sides
  • D. The longest side of a shape
1 markfoundation

Two similar rectangles have lengths in the ratio 3:5. The perimeter of the smaller rectangle is 24 cm. Explain how to find the perimeter of the larger rectangle without knowing its individual dimensions.

2 markshigher

Quick Recall Flashcards

Perimeter
Total distance around a shape, add all sides
Perimeter vs Area
Perimeter = distance AROUND (1D - cm, m). Area = space INSIDE (2D - cm², m²).

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