Angle Theorem 4

Theorem

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.

Featured Activity

Maths Mind Reader

Maths Mind Reader

This spectacular magic trick never fails to amaze people of all ages assuming they can add and subtract very simple numbers. The mathematics comes in finding out how the trick works.

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.

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Numbers in Words

Numbers in Words

Find the five lettered mathematical words by matching numbers with their equivalent in words. So far this activity has been accessed 18073 times and 834 people have earned a Transum Trophy for completing it.

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