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# Geometric Figures

### MTH 005 Chapter 3 Geometric Figures & Terms

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

Pythagorean Theorem | A triangle is a right triangle if and only if the Sum of the legs squared (leg squared + leg squared) = Hypotenuse squared |

Sum of the angles of any triangle | 180 degrees |

Complementary Angles | Two angles whose sum is 90 degrees; represent the angle & its Complement as x and 90 - x |

Supplementary Angles | Two angles whose sum is 180 degrees; represent the angle & its Supplement as x and 180 - x |

Perimeter of a Rectangle | The distance around the Rectangle Formula: P = 2L + 2W. Represent both length & width in terms of the same variable; make substitutions & solve for the unknown numbers. |

Isosceles Triangle | A triangle with at least 2 angles that are equal |

Obtuse Triangle | A triangle with one angle that is greater than 90 degrees |

Similar Triangles | Corresponding sides are proportional and corresponding angles are equal |

Rectangle | Parallelogram with one angle that is a right angle |

Parallelogram | Quadrilateral whose opposite sides are parallel |

Trapezoid | Four-sided figure with exactly one pair of parallel sides |

Quadrilateral | Four-sided figure in a plane |

Right triangle | A triangle with one angle that is a right angle (90 degrees) |

Created by:
powens