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12.7: Chapter 12 Review

Difficulty Level: At Grade Created by: CK-12

Keywords & Theorems

  • Line of Symmetry
  • Line Symmetry
  • Rotational Symmetry
  • Center of Rotation
  • angle of rotation
  • Transformation
  • Rigid Transformation
  • Translation
  • Vector
  • Reflection
  • Line of Reflection
  • Reflection over the \begin{align*}y-\end{align*}yaxis
  • Reflection over the \begin{align*}x-\end{align*}xaxis
  • Reflection over \begin{align*}x = a\end{align*}x=a
  • Reflection over \begin{align*}y = b\end{align*}y=b
  • Reflection over \begin{align*}y = x\end{align*}y=x
  • Reflection over \begin{align*}y = -x\end{align*}y=x
  • Rotation
  • Center of Rotation
  • Rotation of \begin{align*}180^\circ\end{align*}180
  • Rotation of \begin{align*}90^\circ\end{align*}90
  • Rotation of \begin{align*}270^\circ\end{align*}270
  • Composition (of transformations)
  • Glide Reflection
  • Reflections over Parallel Lines Theorem
  • Reflection over the Axes Theorem
  • Reflection over Intersecting Lines Theorem
  • Tessellation

Review Questions

Match the description with its rule.

  1. Reflection over the \begin{align*}y-\end{align*}yaxis - A. \begin{align*}(2a - x, y)\end{align*}(2ax,y)
  2. Reflection over the \begin{align*}x-\end{align*}xaxis - B. \begin{align*}(-y, -x)\end{align*}(y,x)
  3. Reflection over \begin{align*}x = a\end{align*}x=a - C. \begin{align*}(-x, y)\end{align*}(x,y)
  4. Reflection over \begin{align*}y = b\end{align*}y=b - D. \begin{align*}(-y, x)\end{align*}(y,x)
  5. Reflection over \begin{align*}y = x\end{align*}y=x - E. \begin{align*}(x, -y)\end{align*}(x,y)
  6. Reflection over \begin{align*}y = -x\end{align*}y=x - F. \begin{align*}(x, 2b - y)\end{align*}(x,2by)
  7. Rotation of \begin{align*}180^\circ\end{align*}180 - G. \begin{align*}(x, y)\end{align*}(x,y)
  8. Rotation of \begin{align*}90^\circ\end{align*}90 - H. \begin{align*}(-x, -y)\end{align*}(x,y)
  9. Rotation of \begin{align*}270^\circ\end{align*}270 - I. \begin{align*}(y, -x)\end{align*}(y,x)
  10. Rotation of \begin{align*}360^\circ\end{align*}360 - J. \begin{align*}(y, x)\end{align*}

Texas Instruments Resources

In the CK-12 Texas Instruments Geometry FlexBook, there are graphing calculator activities designed to supplement the objectives for some of the lessons in this chapter. See http://www.ck12.org/flexr/chapter/9697.

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Date Created:
Aug 07, 2013
Last Modified:
Sep 21, 2015
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CK.MAT.ENG.SE.2.Geometry.12.7