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# Geometry Ch 9

### Stepp's Prentice Hall Geometry Chapter 9 Transformations (sec. 1-5 only)

Question | Answer |
---|---|

A(n) ____ is a change in position, shape, or size of a figure | transformation |

A ____ is a transformation in which all points in a figure move the same distance & direction | translation |

A(n) ___ is a transformation in which the preimage and its image are congruent | isometry |

Another word for reflection is ___ | flip |

To describe a rotation, you need to know the ___ and the ___ | center, angle of rotation |

Figures can have reflectional or rotational ___ | symmetry |

Which type of transformation results in a similar figure? | dilation |

A scale factor must be ____ | greater than zero |

Scale factors between 0 and 1 result in a ___ | reduction |

Enlargements occur when the scale factor is ___ | bigger than one |

To rotate dilate a figure, begin by drawing the line connecting a point to the ____ | center |

(x,y) (x +3, y – 6) is an example of a rule for a ___ | translation |

A ___ is always counterclockwise unless otherwise stated | rotation |

If half of a figure could be folded to fit exactly over the other half, it has ___ | symmetry |

If the center for a transformation is not named, it is assume to be ___ | (0,0) |

Which transformations do not have a center?___ | translations, reflections |

an image and its preimage are ___ from the center of a rotation | equidistant |

How do you indicate the translation: move point 4 spaces to the left and three spaces up | (x-4,y +3) |

y=x is a line that passes thur the ___ and has a slope of ___ | origin, one |

y=4 is a ___line that passes thru (0,4) | flat |

x = 2 is a vertical line that passes thru__ | (2,0) |

An image of a point, and its preimage are equidistant from the line of ____ | reflection |

The line of reflection is the ___ ___ of the line connecting any point and its preimage | perpendicular bisector |

In a translation, a figure will fit exactly on top of its ___ | image |

In a rotation, the image and preimage are ___ | congruent |

In a dilation the image and preimage are congruent (true or false) | false - they are similar |

In a dilation, the image is always on the line connecting the center and the ____ | preimage |

If the scale factor is 3, and the distance to the image is 12, how far is it from the center to the preimage? __ | 4 |

If the scale factor is 2 and the distance from the center to the preimage is 6, how far is it from the center to the image? | 12 |

the distance from the image to the center divided by the distance from the peimage to the center = ___ | scale factor |

We skipped the lessons on ___ and ___ | composite transformations and tesselatons |

If you have two consecutive rules to follow in order to make a translation, you could simplify by ___ | combining them into one rule by adding |

Created by:
criswell216