\( \DeclareMathOperator{cosec}{cosec} \)

Sign In | Starter Of The Day | Tablesmaster | Fun Maths | Maths Map | Topics | More

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 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.
- Pythagorean Probe Use Pythagoras' Theorem to help find all of the measurements of these right angles triangles.
- 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.

How do you teach this topic? Do you have any tips or suggestions for other teachers? It is always useful to receive feedback and helps make these free resources even more useful for Maths teachers anywhere in the world. Click here to enter your comments.