 |
Chapter Twelve: |
|
|
Geometry Notes Chapter 12 Section 12.1
|
Take notes on the following topics.
Section 12.4 Compositions of Reflections Vocabulary
Glide reflection (p. 656) A glide reflection is the composition of a translation followed by a reflection in a line parallel to the translation vector. Theorem 12-1 A translation or rotation is a composition of two reflections. Theorem 12-2 A composition of reflections in two parallel lines is a translation. Theorem 12-3 A composition of reflections in two intersecting lines is a rotation. Theorem 12-4 Fundamental Theorem of Isometries In a plane, one of two congruent figures can be mapped onto the other by a composition of at most three reflections. Theorem 12-5 There are only four isometries. They are reflection, translation, rotation, and glide reflection.
|
|
