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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.
• Angle Chase Find all of the angles on the geometrical diagrams.
• Angle Theorems Diagrams of the angle theorems with interactive examples.
• Polygon Angle Explorer Barbara Bug walks around a regular hexagon turning through each of the exterior angles as she goes.
• Polygon Angles Video A concise reminder about angles, both interior and exterior, in regular and irregular polygons.
• Polygon Angles A mixture of problems related to calculating the interior and exterior angles of polygons.
• Polygon Profiles A visual aid about the properties of regular polygons designed to be projected onto a whiteboard for whole class exposition.
• Polybragging The Transum version of the Top Trumps game played online with the properties of polygons.
• Polygon Hunting Find all the polygons that can be drawn by joining dots on this seven dot grid.

Here are some exam-style questions on this statement:

• "The exterior angle of a regular polygon is 72°" ... more
• "The diagram, not drawn to scale, show a polygon with one line of symmetry, AE." ... more
• "A number of regular pentagons and squares are arranged around the outside of a large blue regular polygon. Just the lower part of the arrangement is shown below." ... more
• "PQRS is a rhombus and C is the midpoint of QS." ... more
• "The diagrams are not drawn to scale" ... more

See all these questions

Here is an Advanced Starter on this statement:

• Geometry Snack
  Find the value of the marked angle in this diagram from the book Geometry Snacks more

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

• Angles Pupils should understand that angles represent an amount of turning and be able to estimate the size of angle. When constructing models and drawing pupils should be able to measure and draw angles to the nearest degree and use appropriate language associated with angles. Pupils should know the angle sums of polygons and that of angles at a point and on a straight line. They will learn about angles made in circles by chords, radii and tangents and recognise the relationships between them. Pupils will work with angles using trigonometry, transformations and bearings. In exams pupils are often instructed that while non-exact answers should be given to three significant figures, angle answers should be given to one decimal place.