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# 12.7: Chapter 12 Review

Difficulty Level: At Grade Created by: CK-12

## Keywords & Theorems

Exploring Symmetry

• Line of Symmetry
• Line Symmetry
• Rotational Symmetry
• Center of Rotation
• Angle of Rotation

Translations

• Transformation
• Rigid Transformation
• Translation

Reflections

• Reflection
• Line of Reflection
• Reflection over the axis
• Reflection over the axis
• Reflection over
• Reflection over

Rotations

• Rotation
• Center of Rotation
• Angle of Rotation
• Rotation of
• Rotation of
• Rotation of

Compositions of Transformations

• Composition (of transformations)
• Glide Reflection
• Reflections over Parallel Lines Theorem
• Reflection over the Axes Theorem
• Reflection over Intersecting Lines Theorem

Extension: Tessellating Polygons

• Tessellation

## Review Questions

Match the description with its rule.

1. Reflection over the axis - A.
2. Reflection over the axis - B.
3. Reflection over - C.
4. Reflection over - D.
5. Rotation of - E.
6. Rotation of - F.
7. Rotation of - G.
8. Rotation of - H.

## 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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