GEOMETRY UNIT 4 CORE VOCABULARY AND CONCEPTS

CHAPTER 4 CORE VOCABULARY Section 4.1 vector, p. 174 initial point, p. 174 terminal point, p. 174 horizontal component, p. 174 vertical component, p. 174 component form, p. 174 transformation, p. 174 image, p. 174 preimage, p. 174 translation, p. 174 rigid motion, p. 176 composition of transformations, p. 176 Section 4.2 reflection, p. 182 line of reflection, p. 182 glide reflection, p. 184 line symmetry, p. 185 line of symmetry, p. 185 Section 4.3 rotation, p. 190 center of rotation, p. 190 angle of rotation, p. 190 rotational symmetry, p. 193 center of symmetry, p. 193 Section 4.4 congruent figures, p. 200 congruence transformation, p. 201 Section 4.5 dilation, p. 208 center of dilation, p. 208 scale factor, p. 208 enlargement, p. 208 reduction, p. 208 Section 4.6 similarity transformation, p. 216 similar figures, p. 216

CHAPTER 4 CORE CONCEPTS Section 4.1 Vectors, p. 174 Translations, p. 174 Postulate 4.1 Translation Postulate, p. 176 Theorem 4.1 Composition Theorem, p. 176 Section 4.2 Reflections, p. 182 Coordinate Rules for Reflections, p. 183 Postulate 4.2 Reflection Postulate, p. 184 Line Symmetry, p. 185 Section 4.3 Rotations, p. 190 Coordinate Rules for Rotations about the Origin, p. 191 Postulate 4.3 Rotation Postulate, p. 192 Rotational Symmetry, p. 193 Section 4.4 Identifying Congruent Figures, p. 200 Describing a Congruence Transformation, p. 201 Theorem 4.2 Reflections in Parallel Lines Theorem, p. 202 Theorem 4.3 Reflections in Intersecting Lines Theorem, p. 203 Section 4.5 Dilations and Scale Factor, p. 208 Coordinate Rule for Dilations, p. 209 Negative Scale Factors, p. 210 Section 4.6 Similarity Transformations, p. 216

Section 4.1

Section 4.2

Section 4.3

Section 4.4

Section 4.5

Section 4.6