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These are the Transum resources related to the statement: "Pupils should be taught to compare and classify geometric shapes based on their properties and sizes and find unknown angles in any triangles, quadrilaterals, and regular polygons".

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 A self marking exercise involving calculating the unknown angle in a triangle.
- 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.
- Area shapes Investigate polygons with an area of 4 square units. This is your starting point, you can decide how to proceed.
- Different types of Triangle Euclid and his friends explain how many different kinds of triangle there are.
- Online Logo An online version of the Logo programming language with 30 mathematical challenges.
- Polybragging The Transum version of the Top Trumps game played online with the properties of polygons.
- Polygon Angles A mixture of problems related to calculating the interior and exterior angles of polygons.
- Polygon Angles Animation 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 Pieces Arrange the nine pieces of the puzzle on the grid to make different polygons.
- Polygon Properties Connect the names of the polygons with the descriptions of their properties.
- Polygons Name the polygons and show the number of lines and order of rotational symmetry.
- Shapes In The Stars Join up the stars to find the hidden regular polygons.

Here is an exam-style questions on this statement:

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

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