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# Math NWEA

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

Ratio | A comparison of two numbers by division |

Equivalent Ratios | Two ratios that name the same number |

Rate | A ratio involving two quantities in different units |

Unit Rate | The rate for one unit of a given quantity |

Unit Cost | A unit rate that gives the cost per unit |

Proportion | An equation stating that two ratios are equal |

Cross Products | You can find this of two ratios by multiplying the numerator of each ratio by the denominator of the other ratio |

Scale | The ratio that compares a length in a drawing or model to the length in an original object |

Percent | A ratio that compares a number two one-hundred |

Circle Graph | A graph id data in which the entire circle represents the whole |

Point | A location in space. It has no size. |

Line | A series of points that extends in two opposite directions without end. |

Segment | Consists of two endpoints and all the points of the line between the endpoints. |

Ray | Consists of one endpoint and all the points of the line on one side of the endpoint |

Plane | A flat surface with no thickness that extends in all directions on a surface |

Intersecting Lines | Lines that have exactly one point in common |

Parallel Lines | Lines that have no points in common and never will. |

Skew Lines | Lines that are not parallel and do not intersect. |

Angles | A figure formed by two rays with a common endpoint |

Vertex | The point of intersection of two sides of an angle or figure |

Degrees | To measure angles in units. |

Acute Angles | Measures less then ninety degrees. |

Right Angles | Measures ninety degrees. |

Obtuse Angles | Measures between ninety and one hundred eighty degrees |

Straight Angles | Measures one hundred eighty degrees |

Perpendicular Lines | Lines that intersect and form right angles |

Complementary Angles | The sum of the measures of two angles is ninety degrees |

Supplementary Angles | The sum of the measures of two angles that equal one hundred eighty degrees |

Vertical Angles | Two intersecting lines |

Congruent Angles | Angles with equal measures |

Transversal | A line that intersects two or more lines |

Triangle | A closed figure made of three line segments that meet only at their endpoints. |

Acute Triangle | Three acute angles |

Obtuse Triangle | One obtuse angle |

Right Triangle | One right angle |

Equilateral Triangle | Three congruent sides |

Isosceles Triangle | At least two congruent sides |

Scalene Triangle | No congruent sides |

Congruent Segments | Segments that are the same length |

Polygon | A closed figure that has three or more line segments that do not cross |

Regular Polygons | A polygon with all sides congruent and all angles congruent |

Irregular Polygons |