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Here are some specific activities, investigations or visual aids we have picked out. Click anywhere in the grey area to access the resource.

- Angles in a Triangle Video A reminder of how to use the fact that the angles in a triangle sum to 180 degrees to find the size of unmarked angles in triangular diagrams.
- Angles in a Triangle A self marking exercise involving calculating the unknown angle in a triangle.
- Pythagoras Basics A drill and practice self marking exercise on the basics of Pythagoras' theorem.
- Demonstrating Pythagoras' theorem Short clip from QI: Stephen Fry demonstrates Pythagoras' theorem.
- Make Them Right Arrange the measurements next to the sides of the triangles so that each diagram is correct according to Pythagoras' Theorem.
- Congruent Triangles Video Learn the conditions for two triangles to be congruent and then use this information to solve problems.
- Congruent Triangles Test your understanding of the criteria for congruence of triangles with this self-marking quiz.
- Congruent Parts Use the colours to dissect the outlines into congruent parts.
- Similar Parts Use the colours to dissect the outlines into similar parts.

Here are some exam-style questions on this statement:

- "
*\(ABC\) is a right-angled triangle.*" ... more - "
*The diagram, not drawn to scale, show a polygon with one line of symmetry, AE.*" ... more - "
*A point P is marked on side BC of parallelogram ABCD such that AB = BP.*" ... more - "
*The diagram shows a quadrilateral ABCD in which angle DAB equals angle CDA and AB = CD.*" ... more

Click on a topic below for suggested lesson Starters, resources and activities from Transum.

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