Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# 7th Geometry

### Angles, Triangles

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

Ray | A part of a line that has one fixed end point and extends infinitely along the line from the end point. |

Angle | A figure formed by two rays. |

Vertex | A point where two or more lines come together. |

Acute angle | An angle less than 90 degrees |

Right angle | An angle equal to 90 degrees |

Obtuse angle | An angle greater than 90 degrees but less than 180 degrees |

Straight angle | An angle that equals 180 degrees |

Supplementary angle | Two angles that total 180 degrees. |

Complementary angle | Two angles that total 90 degrees. |

Adjacent angles | Two angles that share the same vertex, but do not have any other relationship. |

Vertical angles | A pair of angles opposite intersection lines. Vertical angles are equal to each other. |

Equilateral triangle | A triangle that has ALL sides the same length |

Isosceles triangle | A triangle that has EXACTLY two sides equal. |

Scalene triangle | A triangle in which ALL sides are NOT the same |

Acute triangle | A triangle with all three angles that are less than 90 degrees |

Right triangle | A triangle with a 90 degree angle |

Obtuse triangle | A triangle that has one angle more than 90 degrees |

Created by:
MsHarkness