from The Open University
Alternatively you can skip the navigation by pressing 'Enter'.
The RavensSaturday, 18th April 2015 23:05 - BBC World Service RadioA social work student brefriends a sex worker in Sydney - but how easy is changing a life? The second of two... Read more: The Ravens: 24th International Radio Playwriting Competition winner
The RavensSunday, 19th April 2015 04:05 - BBC World Service Radio
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Monday, 20th April 2015 00:15 - BBC Radio 4
Secret History Of... Deptford High StTuesday, 21st April 2015 20:00 - BBC Four
A History of Ideas - Descartes Cogito Ergo SumAvailable until Thursday, 14th April 2016 08:30Stephen Fry explains Rene Descartes argument 'Cogito Ergo Sum' - 'I think, therefore I am'. Watch now: OU on the BBC: A History of Ideas - Descartes Cogito Ergo Sum
A History of Ideas - Erving Goffman's Performed SelfAvailable until Thursday, 14th April 2016 08:15
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Available until Friday, 15th April 2016 09:45
A History of Ideas - John Locke and personal memoryAvailable until Thursday, 14th April 2016 11:15
What does it mean to be me?Watch these short and snappy animations on the subject of me: the individual, memory, 'self' and... Watch now: What does it mean to be me?
The Election Debate Visualisation ProjectEven though social media is thoroughly embedded in voters’ culture we have yet to come up with an... Read more: The Election Debate Visualisation Project
Introduction to bookkeeping and accountingThis free course Introduction to bookkeeping and accounting provides an introduction to the... Try: Introduction to bookkeeping and accounting now
Succeed with maths – Part 1[BETA] If you feel that maths is a mystery that you want to unravel then this short 8-week course... Try: Succeed with maths – Part 1 now
Geometry is concerned with the various aspects of size, shape and space. In this unit,...
Geometry is concerned with the various aspects of size, shape and space. In this unit, you will explore the concepts of angles, shapes, symmetry, area and volume through interactive activities.
After studying this unit you should be able to:
- understand geometrical terminology for angles, triangles, quadrilaterals and circles;
- measure angles using a protractor;
- use geometrical results to determine unknown angles;
- recognise line and rotational symmetries;
- find the areas of triangles, quadrilaterals and circles and shapes based on these;
- find the volume of boxes, cyclinders and objects with constant cross-sectional areas.
- Current section: Introduction
- Learning outcomes
- 1 Angles
- 1.1 Angles, notation and measurement
- 1.2 How to measure an angle
- 1.3 Angles, points and lines
- 1.3.2 Angles on a line
- 1.3.3 Drawing a pie chart
- 1.3.4 Vertically opposite angles
- 1.4 Parallel lines
- 1.4.1 Corresponding angles
- 1.4.2 Alternate angles
- 2 Shapes and symmetry
- 3 Areas and volumes
- 4 OpenMark quiz
This unit looks at various aspects of shape and space. It uses a lot of mathematical vocabulary, so you should make sure that you are clear about the precise meaning of words such as circumference, parallel, similar and cross-section. You may find it helpful to note down the meaning of each new word, perhaps illustrating it with a diagram.
This module contains some interactive geometry activities which use the Java based software, Geogebra. You will need to install Java on your computer in order to use the activities. Geogebra .. Further information on Geogebra is available on
If you are unable to use this software, you will still be able to complete this module.
If you have Java installed, you should be able to follow the link to the first activity below. This activity explains how to use some of the tools you will need in the rest of the module.
Activity 1: Using dynamic geometry software
Click here to start learning about how to use dynamic geometry software.
This unit is from our archive and it is an adapted extract fromOpen Mathematics (MU120) that is no longer in presentation. If you wish to study formally at The Open University, you may wish to explore the courses we offer in this curriculum area.
This is an extract from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Mathematics Education course units or view the range of currently available OU Mathematics Education courses.