How Do Dilations Map Angles?

The key to understanding is making connections. Scholars explore angle dilations using properties of parallel lines. At completion, pupils prove that angles of a dilation preserve their original measure. 

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CCSS: Designed
Instructional Ideas

  • As a time saver, divide the class into groups for the exploration and assign a problem to each group; have groups share their conclusions on the board
  • Ask pupils to write proportionality statements to verify scale factors
Classroom Considerations

  • Review properties of parallel lines cut by a transversal to aid in the understanding of dilated angles
  • A continuation of a 36-part series
Pros

  • Emphasizes unit vocabulary
  • Provides ideas to help struggling learners
Cons

  • None