Below is an interactive version of the diagram. Drag the points to see how the diagram responds.
The following animation was created and is shared by Anthony C.M. OR under a License: CC-BY-SA.
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 September 2025 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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Recently UpdatedTransformation Golf Use reflection, translation or rotation to get the ball into the holes on this nine-hole golf course. So far this activity has been accessed 126 times and only 1 person has earned a Transum Trophy for completing it. |
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