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# 12 Free Circle Theorems Worksheets and Resources for KS3 and KS4 Maths

If your secondary students feel like circle theorem is like putting a square peg in a round hole, help them see the point of all these angles by using a triangular one instead...

• ### 1 | Fill in the blanks Author: Andy Lutwyche

These sheets contain sketches of circle theorems and blanks for the students to fill in in their own words.

They can then use the notes in a future lesson to fill in the blanks on the ‘Fill In The Blanks’ sheet.

The idea was to save them drawing poor sketches in their books and to write the rules in their own words.

### 2 | First steps with circle theorems Author: David Morse

Three carefully thought-out worksheets that have helped many classes take the first steps working with the circle theorems.

Included are ‘Angles in the Same Segment’ and ‘Angle at the Centre’.

I have used these sheets for many years and they have always given students an excellent base from which to move onto the more difficult problems.

### 3 | Three-part lesson Author: Manoj Mistry

Three-part lesson with grade A questions. Starter includes questions to recap and consolidate previous learning in accordance with the route map (scheme of work) I have uploaded.

### 4 | Four PowerPoint lessons Author: Owen134866

This resource contains material for four lessons on the GCSE circle theorems topics.

Each lesson has a PowerPoint including explanations, proofs, starters and plenaries. The worksheets have example questions on each topic, including answers.

### 5 | Codebreaker Author: Andy Lutwyche

The mandatory terrible joke whose punchline is revealed by answering some questions involving circle theorems.

Useful as a starter or plenary.

### 6 | Lesson, worksheets and assessment Author: Dr Frost Maths

Covers all aspects of most GCSE specifications. Including a PowerPoint, worksheet and assessment.

### 7 | Circle theorems poster display Author: David Morse

This is my poster for circle theorems, which provides a great reference for the main theorems.

I give students the A5 version for revision and have a large version on the wall somewhere.

### 8 | Broken turntable circle theorems Author: Andy Lutwyche

This is a Word document worksheet involving finding the missing angles using circle theorems for KS4.

A colleague of mine gave me this idea of using records and circle theorems – you have to calculate the missing angles to get the turntable fixed in each case.

I’ve chosen some of my favourite albums! A separate answer sheet is included.

### 9 | Applying Pythagoras and circle theorems Author: Ben Cooper

This is a tricky trapezium circle question, a Geometry A question about finding the area of a circle which has a trapezium draw inside it, with some hints in case students get stuck.

Brings in pythagoras, cosine rule, trig and circle theorems.

### 10 | Circle theorem bingo Author: Fiona Ryan

Circle theorem bingo PowerPoint. Answers included.

### 11 | Circle theorems and logos worksheets Author: Andy Lutwyche

Go through the circle theorems with your class then get them to use their newly found knowledge when calculating the missing angles on these logos for the embroidery machine.

### 12 | GCSE 9-1 exam practice questions Author: David Morse

This carefully selected compilation of exam questions has fully-worked solutions designed for students to go through at home, saving valuable time in class. 