∑ Math Academy

Cambridge / IGCSE • Geometry

Circle theorems

Welcome to Circle theorems. This guided lesson develops core knowledge for Grade 9/10 (Cambridge / IGCSE).

Learning Objectives

  • Explain the key ideas in circle theorems
  • Apply the method step by step
  • Check answers using mathematical reasoning

Lesson Explanation

Read each method carefully, then try the examples yourself. Use precise mathematical vocabulary and show your working clearly.

💡 Key Takeaway

Take one step at a time, check your working carefully, and keep both sides balanced!

Worked Examples

Example 1

Guided example

  1. Step 1

    Identify the information given

  2. Step 2

    Choose the appropriate method

  3. Step 3

    Work carefully and check the result

Visual Method

Balance Every Step

Mathematics becomes much clearer when you can see the structure behind equations.

Watch Video Explanation

Practice Questions

Try solving each question on paper first. Tap below to check a helpful hint or solution!

Question 1

Try an introductory question

Show Hint / Solution 💡

Hint: Identify the operation being applied to the unknown variable and apply the inverse operation to both sides of the equation.

Question 2

Try a standard exam-style question

Show Hint / Solution 💡

Hint: Identify the operation being applied to the unknown variable and apply the inverse operation to both sides of the equation.

Question 3

Try a challenge question

Show Hint / Solution 💡

Hint: Identify the operation being applied to the unknown variable and apply the inverse operation to both sides of the equation.

Lesson Summary

What to Remember

Use the methods from this lesson to approach circle theorems carefully, show each step, and check that your answer is sensible.

Download Lesson Notes ↓