Scale Factors and Centres of Enlargement (B) WORKSHEET

Introduce your learners to enlargements by negative scale factors with this worksheet. Here there are six objects to enlarge by three different scale factors: -1, -2 and -¹⁄₂. The orientation of centres of enlargement varies, as do the polygons themselves. Objects include right-angled and isosceles triangles, a trapezium, parallelogram, arrowhead and arrow shape and are all translucent to aid students' transformations.

Using column vectors or rays of enlargement may help students when beginning to enlarge using negative scale factors. Ensure learners are equipped with a pencil and ruler to complete their transformations.