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

Polybragging

Polybragging

If you have ever played a card game called Top Trumps you will know the main idea of this game already. Based on the properties of polygons this game for two or more players is a fun way to learn geometric facts.

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.

Recently Updated

Percentages Quiz

Percentages Quiz

A multi-level quiz on finding percentages. The lower level questions can be done mentally while the highest level questions require a calculator. So far this activity has been accessed 171946 times and 41677 people have earned a Transum Trophy for completing it.

Apple

©1997-2025 WWW.TRANSUM.ORG