Chapter Twelve:  
Transformations

Geometry   Notes

Chapter  12

Section  12.1
Section  12.2
Section  12.3
Section  12.4
Section  12.5
Section  12.6
Section  12.7

Geometry Contents

Take notes on the following topics.

Section 12.6  Tessellations

Vocabulary

Tessellation (p. 667) A tessellation, or tiling, is a repeating pattern of figures that completely covers a plane without gaps or overlap. A pure tessellation is a tessellation that consists of congruent copies of one figure.

Translational symmetry (p. 668) Translational symmetry is the type of symmetry for which there is a translation that maps a figure onto itself.

Glide reflectional symmetry (p. 668) Glide reflectional symmetry is the type of symmetry for which there is a glide reflection that maps a figure onto itself.