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# Geometry Vocab KKB

### Geometry Vocabulary for Katharine

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

What is a simple, closed figure formed by joining 3 or more segments | polygon |

What are the segments that form a polygon | sides |

What is the corner where 2 sides meet | vertex |

What is a straight set of points that goes on in 2 opposite directions forever | line |

What is a part of a line that has 2 end points and whose length can be measured | line segment |

What is a part of a line with a beginning but no ending | ray |

What are lines that are the same distance apart and will never touch | parallel lines |

What are lines that connect at a common point (vertex) | intersecting lines |

What are intersecting lines that cross at 90 degree angles | perpendicular lines |

What is a polygon whose sides and angles are all the same measure | regular polygon |

A triangle with 3 sides of equal length and 3 angles of equal measure | equilateral |

A triangle with 2 sides of equal length and 2 angles of equal measure | isosceles |

A triangle with no sides the same length or angles the same measure | scalene |

A triangle with 1 right angle | right |

A triangle with 3 acute angles | acute |

A triangle with 1 obtuse angle | obtuse |

A quadrilateral with exactly one pair of opposite sides parallel | trapezoid |

A quadrilateral with 2 pairs of opposite parallel sides | parallelogram |

A parallelogram with 4 congruent sides | rhombus |

A parallelogram with 4 right angles | rectangle |

A rectangle with 4 congruent sides | square |

Two rays with a common vertex as the mid point | angle |

An angle measuring 90 degrees | right |

An angle measuring less than 90 degrees | acute |

An angle measuring more than 90 degrees | obtuse |

An angle measuring 180 degrees | straight |

A figure can be folded in half so that both sides match exactly | line symmetry |

A figure can be rotated around a point and the figure will look exactly the same as it did in its original position | rotational symmetry |

A transformation that creates a mirror image of a figure across a line | reflection |

Moves a figure horizontally, vertically, or diagonally | translation |

Moves a figure by rotating it around a point | rotation |

Created by:
sdbowen1