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# Topic 12

### Geometry

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

solid figure | a figure that is filled in and has length, width, and height (3 dimensional) solid figures: cube, rectangular prism, cone, cylinder, pyramid, sphere |

edge | the place where two flat surfaces of a solid figure meet |

face | the flat surface of a solid figure |

flat surface | a plane flat surface with no depth |

vertex | a point where two sides or three or more edges meet vertices = more than one vertex |

plane shape | a flat 2-dimensional figure plane shapes = square, rectangle, triangle, circle |

rectangle | a plane shape with two sets of opposite sides that are the same length |

square | a plane shape with all four sides the same length |

triangle | a plane shape with three sides |

polygon | a plane shape with three or more sides |

hexagon | a plane shape that has six sides |

parallelogram | a plane shape that has four sides the opposite sides are parallel |

parallel lines | two lines that never cross or meet |

side | a line segment that makes one part of a plane shape |

quadrilateral | all polygons that have four sides square, rectangle, trapezoid, parallelogram |

angle | two rays with the same end point; that endpoint is the vertex of the angle |

pentagon | a polygon with five sides |

row | a horizontal line of objects; line that goes from left to right |

column | a vertical line of objects; line that goes from top to bottom |

equal | to have the same amount, size, number, or value |

halves | when one whole is divided into two equal parts |

fourths | when one whole is divided into four equal parts |

thirds | when one whole is divided into three equal parts |

unequal | parts that are not equal |

Created by:
ShelleyQ