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# Geometry Vocabulary

### Chapter 6

Term | Meaning |
---|---|

altitude of a prism | segment that joins the planes of the bases. |

altitude of a circle | perpendicular segment that joins the planes of the bases. |

altitude of a pyramid | the perpendicular segment from the vertex to the center of the base. |

altitude | a perpendicular segment from the bertex to the center of the base |

bases | a face |

center | the middle of the shape |

circumference of a sphere | the circumfrence of a great circle. |

composite space figure | combines two or more of these figures |

cone | like a pyramid, but its base is a circle |

cube | a prism with square faces |

cylinder | has two congruent parallel bases |

edge | a segment that is the intersection of two faces |

faces | polygons of a polyhedron |

geometric probability | uses geometric figures to represent occurrences of events. |

great circle | if the center of the circle is also the center of the sphere. |

height | is the length of an altitude |

hemisphere | is the two parts made by the great circle |

lateral area | is the sum of the areas of the lateral faces |

lateral face | the faces that are not the base. The area of the resulting rectanngle of a circle |

net | a two dimensional pattern that you fold to form a three dimensional shape |

oblique cylinder | a cylinder that is not straight and the right angle is outside of the shape |

oblique prism | the height or altitude outside of the prism |

polyhedron | a three dimensional figure whose surfaces are polygons |

prism | a polyhedron with two congruent parallel bases |

pyramid | a polyhedron in which one face (the base) can be any polygon and the other faces are triangles that meet at a common vertex |

regular pyramid | a pyramid whose base is a regular polygon. |

right cone | the altitude is perpendicular segment from the vertex to the center of the base. |

right cylinder | the segment joining the centers of the bases is an altitude. |

right prism | the lateral faces are rectangles & a lateral edge is an altitude |

slant height | is the length of the altitude of a lateral face of the pyramid |

sphere | the set of all points in space equidistant from a given point |

surface area | is the sum of areas of the lateral faces and the two bases |

vertex | a point where edges intersect |

volume | is the space that a figure occupies. |

Created by:
gumby2008