CK-12 Geometry - Second Edition

(Marvins-Underground-K-12) #1

12.5. Composition of Transformations http://www.ck12.org



  1. Perform a glide reflection over they−axis and down 5 units. Write the new coordinates.

  2. What is the rule for this glide reflection?

  3. What glide reflection would move the image back to the preimage?


Use the graph of the triangle below to answer questions 11-15.



  1. Reflect the preimage overy=−1 followed byy=−7. Write the new coordinates.

  2. What one transformation is this double reflection the same as?

  3. What one translation would move the image back to the preimage?

  4. Start over. Reflect the preimage overy=−7, theny=−1. How is this different from #11?

  5. Write the rules for #11 and #14. How do they differ?


Use the graph of the trapezoid below to answer questions 16-20.

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