2026/27 Enrolment Open · Free Assessment
Cambridge IGCSE MathematicsSyllabus 0580Unit 3: Shape and space
Chapter 11

Pythagoras' theorem and similar shapes

Apply Pythagoras' theorem in right-angled triangles, find unknown lengths, areas and volumes in similar shapes, and identify congruent figures for Cambridge IGCSE Mathematics.

What You'll Learn

  • 01Pythagoras' theorem in 2D triangles
  • 02Finding hypotenuse and shorter sides
  • 03Similar shapes and linear scale factors
  • 04Similar areas and surface area ratios
  • 05Volumes and masses of similar solids
  • 06Congruent shapes and triangles
Resources

Topical Past Papers

Practice questions from licensed topical past papers organised around this topic.

View Topical Past Papers →

Chapter Topics

4 official subtopics
11.1Pythagoras' theorem
11.2Understanding similar shapes
11.3Understanding similar areas and volumes
Extended
11.4Understanding congruence

Your Learning Journey

Plan your chapter across focused 60-minute sessions.

5 Sessions5 Hours (300 min)
01
LEARN
60 MIN
11.1 Pythagoras' theorem
Session 1 of 5
02
LEARN
60 MIN
11.2 Understanding similar shapes
11.3 Understanding similar areas and volumes
Session 2 of 5
03
LEARN
60 MIN
11.4 Understanding congruence
Session 3 of 5
04
PRACTICE
60 MIN
Chapter Practice
Session 4 of 5
05
EXAM
60 MIN
Past Paper Practice
Session 5 of 5
1-to-1 Mathematics Tuition · Cambridge IGCSE Mathematics

Master Chapter 11: Pythagoras' theorem and similar shapes with Siddharth Agrawal

Book a free 30-minute diagnostic session for personalised 1-to-1 coaching tailored to your Extended tier target grade.