__ | 1. | acute angle | | A. | two angles that together make 90 degrees |

__ | 2. | adjacent angles | | B. | an angle less than 90 degrees |

__ | 3. | complementary angles | | C. | two angles that together make 180 degrees |

__ | 4. | obtuse angle | | D. | two angles that are next to each other (share a side) |

__ | 5. | reflex angle | | E. | an angle more than 90 degrees |

__ | 6. | right angle | | F. | an angle more than 180 degrees |

__ | 7. | straight angle | | G. | an angle exactly 180 degrees |

__ | 8. | supplementary angles | | H. | an angle exactly 360 degrees |

__ | 9. | verticle angles | | I. | an angle exactly 90 degrees |

__ | 10. | whole angle | | J. | two angles across from each other (have the same degrees) |