http://www.ck12.org Chapter 12. Rigid Transformations
12.7 Chapter 12 Review
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 they−axis
- Reflection over thex−axis
- Reflection overx=a
- Reflection overy=b
- Reflection overy=x
- Reflection overy=−x
- Rotation
- Center of Rotation
- Rotation of 180◦
- Rotation of 90◦
- Rotation of 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.
- Reflection over they−axis - A.( 2 a−x,y)
- Reflection over thex−axis - B.(−y,−x)
- Reflection overx=a- C.(−x,y)
- Reflection overy=b- D.(−y,x)
- Reflection overy=x- E.(x,−y)
- Reflection overy=−x- F.(x, 2 b−y)
- Rotation of 180◦- G.(x,y)
- Rotation of 90◦- H.(−x,−y)
- Rotation of 270◦- I.(y,−x)