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# Math 7 Unit 6.1

### Angles and Circles

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

A ____________ is a part of a line and an angle is formed by two of them that have the same endpoint. | ray |

A ____________ angle forms a square corner that measures 90 degrees. | right |

An ______________ angle is less than a right angle. | acute |

An ______________ angle is greater than a right angle. | obtuse |

A ___________ is a unit used to measure angles. | degree |

A ___________ is a straight path of points that extends without end in both directions. | line |

A _______________is a part of a line that includes any two points on the line and all the points in between those two points. | line segment |

A ____________ is a location in space with no length, width, or depth. | point |

A ____________________ is a tool to measure the degrees in an angle. | protractor |

A ___________________ is an angle that measures exactly 180°; it is a line. | straight angle |

A ______________ is the common endpoint of the two rays or segments that form an angle less than 180°. | vertex (plural: vertices) |

The vertex of a 180° angle is any __________ along the line. | point |

The plural of vertex is _____________. | vertices |

An _______________ is an angle whose measure is greater than 0° and less than 90°. | acute angle |

An _______________ is an angle whose measure is greater than 90° and less than 180°. | obtuse angle |

A __________________ is an angle whose measure is exactly 180°. | straight angle |

A _____________ is a collection of points in a straight path that extends without end in both directions. | line |

A (An) _____________ is a figure formed by two rays, called sides, that share the same endpoint. | angle |

A (An) ____________ is the endpoint that two rays that form an angle share. | vertex |

You can name an ____________ by using three points by naming a point on one side, the vertex, and then a point on the other side. | angle |

You can use just the _______________ to name an angle. | vertex point |

You can use a ____________, such as a number or a lowercase letter that may be near the vertex, between the sides to name an angle. | label |

Created by:
Smdebusk