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# Unit 4 vocab #1-12

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

angles in the same plane that have a common vertex and a common side | adjacent angles |

a figure formed by two rays with a common endpoint called the vertex | angle |

a side of a polygon | base of a polygon |

a face of a three dimensional figure by which the figure is measured or classified | base of a 3D figure |

the distance around a circle | circumference |

two angles whose measures add to 90 degrees | complementary angles |

the intersection of a three dimensional figure and a plane | cross section |

a line segment that passes through the center of a circle and has endpoints on the circle, or the length of that segment | diameter |

the length, width, or height of a figure | dimensions |

a flat surface of a polyhedron | face |

draw a figure within another so that their boundaries touch but do not intersect | inscribed |

a straight path that has no thickness and extends forever | line |

a part of a line made of two endpoints and all points between them | line segment |

lines in a plane that do not intersect | parallel |

lines that intersect to form right angles | perpendicular |

the ratio of the circumference of a circle to the length of its diameter | PI |

a flat surface that has no thickness and extends forever | plane |

a polyhedron with a polygon base and triangular sides that all meet at a common vertex | pyramid |

a line segment with one endpoint at the center of a circle and the other endpoint on the circle, or the length of that segment | radius |

a part of a line that starts at one endpoint and extends forever in one direction | ray |

a polyhedron whose bases are rectangles and whose other faces are parallelograms | right rectangular prism |

a pyramid whose base is a regular polygon and whose lateral faces are all congruent | right rectangular pyramid |

two angles whose measures have a sum of 180 degrees | supplementary |

a pair of opposite congruent angles formed by intersecting lines | vertical |

Created by:
colorguard101