Pupil have to fill in the blank columns. Number of sides and picture are given to them for polygons upto dodecagon. Pupils have to fill in the names of the polygons, an interior angle of a regular polygon, and the sum of the interior angles. Extension: Pupil can fill in the blank column and work out the number of triangles that fit into each polygon. Get pupils to think how the relationship between columns can lead to a general case for each column. Where n = number of side.
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