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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 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.
- Different types of Triangle Euclid and his friends explain how many different kinds of triangle there are.
- Polygons Name the polygons and show the number of lines and order of rotational symmetry.
- Online Logo An online version of the Logo programming language with 30 mathematical challenges.
- Area shapes Investigate polygons with an area of 4 square units. This is your starting point, you can decide how to proceed.
- Polygon Angles Animation Barbara Bug walks around a regular hexagon turning through each of the exterior angles as she goes.
- Shapes In The Stars Join up the stars to find the hidden regular polygons.
- 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.
- Tessellations Drag the shapes onto the canvas to create tessellating patterns then try the tessellations quiz.
- Polygon Pieces Arrange the nine pieces of the puzzle on the grid to make different polygons.
- Polybragging The Transum version of the Top Trumps game played online with the properties of polygons.
- Polygon Properties Connect the names of the polygons with the descriptions of their properties.
- Polygon Hunting Find all the polygons that can be drawn by joining dots on this seven dot grid.

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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