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# Saxon Pre-Calc L 1-5

### Saxon Pre-Calculus Lessons 1-5 Vocabulary and Formulas

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

Point | a location |

Line | a straight curve that has no ends |

Curve | an unbroken connection of points |

Plane | a mathematical line that has no width and continues forever in both directions. |

coplanar | lines that lie in the same plane |

skew lines | lines that are not in the same plane |

Straight angle | an angle with a measure of 180 degrees |

Right angle | an angle with a measure of 90 degrees |

Acute angle | an angle with a measure between 0 and 90 |

Obtuse angle | an angle with a measure between 90 and 180 |

Equiangular | a shape in which all angles are the same |

Equilateral triangle | a triangle with all equal side |

Isoceles triangle | a triangle that has two sides with equal lengths |

Scalene triangle | a triangle that has side of all different lengths |

Parallel lines | lines that never intersect |

Transversal | a line that cuts or intersects one or more other lines in the same place |

Volumes of Cylinders and Prisms | The volume of a cylinder or a prism is equal to the product of the area of a base and the perpendicular distance between the bases. |

Lateral Surface Area of Right Cylinder and Right Prisms | The lateral surface area of a right cylinder or a right prism is the perimeter of a base multiplied by the height (where the height is defined to be the perpendicular distance between the bases). |

Lateral surface area | the area of all surfaces except the bases |

Volume of a cone or pyramid | The volume of any cone or pyramid equals one third the product of the area of the base and the height. |

Triangle inequality postulate | The sum of the lengths of any two sides of any triangle is greater than the length of the third side. |

Pythagorean inequalities | c2 > a2 + b2 and c2 < a2 + b2 |

root(x)*root(x) | x |

X^1/2 | rootx |

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