Angle Theorem

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

Lemon Law

Lemon Law

A fascinating digit changing challenge. Change the numbers on the apples so that the number on the lemon is the given total. Can you figure out, by understanding place value, how this 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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Arithmetic Sequences

Arithmetic Sequences

An exercise on linear sequences including finding an expression for the nth term and the sum of n terms. So far this activity has been accessed 11302 times and 2145 people have earned a Transum Trophy for completing it.

Apple

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