Below is an interactive version of the diagram. Drag the points to see how the diagram responds.
Main Angle Theorems page.
When you think that the angle theorems are understood head for an Angle Activity.
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Featured ActivityNewsletter The Transum Newsletter for November 2026 has just been published. Click on the image above to read about the latest developments on this site and try to solve the puzzle of the month. You can read the newsletter online or listen to it by downloading the podcast. |
This is a Shine+Write visual aid designed to be projected onto a whiteboard for whole class exposition. You can find other popular visual aids on our Shine+Write page. Find out about the latests developments on this website by signing up for a Transum Subscription. You will receive a regular newsletter and have access to the answers to most of the puzzles and activities on this site. |
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Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for those learning Mathematics anywhere in the world. Click here to enter your comments. |
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Have you seen?Recipe Ratios Learn the mathematics required to adapt recipes to serve a different number of people. So far this activity has been accessed 23160 times and 12089 Transum Trophies have been awarded for completing it. |
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