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# math chapter 13

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

Similar figures are? | They have the exact same shape but NOT the same size. |

Congruent figures are? | =~ They have the exact same shape AND size. |

Lines of symetry? | - Separates the figue into two matching halves. |

Rotational symetry? | -Some figures can be turned less than 360 degrees and look exactly as it did before it turned. |

Triangle? | -180 degrees all together. |

Equilateral triangle? | -all sides and all angles congruent. |

Isosceles triangle? | - 2 congruent sides 2 congruent angles. |

Scalene triangle? | - No equal sides. |

Pentagon? | - 5 sides and 5 angles |

Hexagon? | - 6 sides,6 angles |

Octagon? | - 8 sides, 8 angles |

Regular pentagon? | - all sides and all angles are congruent. |

Heptagon? | - 7 sides, 7 angles |

Square? | - all sides and all angles are congruent =360 degrees. |

Rectangle? | - all angles are congruent, 2 pairs of congruent sides. |

Quadrilateral? | - 4 sides and 4 angles. |

Parallelogram? | - 2 pairs of congruent sides and 2 pairs of congruent angles. |

Rhombus? | - 4 equal sides, 2 pairs of congruent angles. |

Angles? | 2 sides that share a common end point called the vertex. |

Right angle? | 90 degrees |

Straight angle? | Exactly 180 degrees. |

Acute angle? | 89 degrees or less. |

Obtuse angle? | Between 91 and 179 degrees. |

Reflex angle? | Larger than 180 less than 360 degrees. |

Complementary angles? | - two angles whose degrees equal exactly 90. |

Supplementary angles? | - two angles whose degrees are exactly 180. |

Adjacent angles? | - Share a common side. |

Vertical angles? | - formed by a pair of lines that intersect. |

Created by:
pattypturner@yahoo.c