Circle Theorems ExerciseShow that you understand and can apply the circle theorems with this self marking exercise. 
This is level 3: randomised questions, some requiring finding more than one angle in a diagram. O is the centre of the circle. You can earn a trophy if you get at least 16 questions correct and you do this activity online.
This is Circle Theorems Exercise level 3. You can also try:
Level 1
Level 2
Angle Chase
Examstyle
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



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Level 1  Angles which can be found using one of the angle theorems
Level 2  Multistep problems requiring one or more of the angle theorems
Level 3  Randomised questions, some requiring finding more than one angle in a diagram
Exam Style questions are in the style of GCSE or IB/Alevel exam paper questions (worked solutions are available for Transum subscribers).
Angle Chase level 4 contains a circle in a diagram of many lines from which you have to find the missing angles.
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
See the National Curriculum page for links to related online activities and resources.
You may also want to use a calculator to check your working. See Calculator Workout skill ##.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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