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Scale Factors and Dilations of Polygons (B) WORKSHEET

Suitable for Grades: 8th Grade

CCSS: 8.G.A.4

CCSS Description: Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Scale Factors and Dilations of Polygons (B) WORKSHEET DESCRIPTION

Introduce your learners to dilations 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 centers of dilation vary, as do the polygons themselves. Objects include right angled and isosceles triangles, a trapezoid, parallelograms, arrowheads, and arrow shapes; all are translucent to aid students' transformations.

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