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# Chapter 7 Vocabulary

### Terms from Unit 7(Sections 7.1-7.3 & 7.5)

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

__ are polygons that have corresponding, proportional sides and corresponding, congruent angles. | Similar polygons |

Two figures that have the same shape and same size are known to be __. | Congruent |

True/False: When writing the side ratios, the image goes over the preimage. | True |

__ is the original figure. | preimage |

Circle the correct term: Congruent figures are always / sometimes / never similar. | always |

A comparison of two quantities by division is called a(n) __. | ratio |

The resulting figure is called __. | image |

When two ratios are equal, it is known as a(n) __. | proportion |

The first and the last numbers in a proportion are called the __. | Extremes |

When three or more ratios are equal, it is called a(n) __. | extended proportion |

__ is a drawing where all the lengths are proportional to their corresponding actual lengths. | scale drawing |

True/False: A figure undergoes a reduction when the scale factor is greater than one. | False |

A ratio that compares each length in the scale drawing to the actual length is known as a(n) __. | Scale |

True/False: The scale factor can be negative. | False |

Circle the correct term: Translation / Rotation is known as a slide. | Translation |

Circle the correct term: Reflection / Dilation is a similar transformation. | Dilation |

Created by:
BL Shillinglaw