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# 4th Geometry Unit 1

### 4th Gr Geomerty vocab unit 1

Term | Definition |
---|---|

points | an exact location in space labeled with a capital letter |

angle | a figure formed by 2 rays or 2 line segments with a common endpoint called a vertex |

endpoint | a point at the end of a line segment or ray |

line | a straight path that extends forever in opposite directions |

line segment | a part of a line between and including two endpoints |

parallel lines | lines in a plane that will never intersect |

quadrangle/quadrilateral | a 4 sided polygon |

polygon | A 2-dimensional figure formed by 3 or more line segments that meet only at their endpoints to make a closed path. The sides may not cross each other. |

parallelogram | a quadrilateral (4 sided figure) with 2 pairs of parallel sides. Opposite sides and angles have the same measure. |

convex polygon | A polygon on which all vertices appear to be "pushed outward" |

concave polygon | a polygon on which at least one vertex appears to be "pushed inward" |

square | a rectangle with all sides of equal length and all right angles |

rhombus | a parallelogram with all sides the same length |

trapezoid | a quadrangle that has exactly one pair of parallel sides |

hexagon | a 6 sided polygon |

perpendicular lines | two lines that intersect to form right angles |

right angle | an angle exactly 90 degrees making a square corner |

Created by:
jwlmath