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# math vocabulary 2-9

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

proportion | An equation stating that two ratios or rates are equivalent. |

origin | The point of intersection of the x-axis and the y-axis in a coordinate system. |

algebra | A mathematical language that uses symbols, usually letters, along with numbers. The letters stand for unknown numbers. |

area | The number of square units needed to cover the enclosed (inside) surface. |

equation | A mathematical sentence that contains an equal (=) sign. |

mean | The sum of the numbers in a set of data divided by the number of pieces of data. |

radius | The distance from the center of the circle to any point on the circle. |

yard | A customary unit of length equal to 3 feet, or 36 inches. |

order of operations | The rules that tell which operation to preform first when more than one operation is used (PEMDAS). |

diameter | The distance across a circle through the center. |

rhombus | A parallelogram with all sides congruent. |

quadrent | One of the four regions in a coordinate plane separated by an x-axis and y-axis. |

mode | The numbers or items that appear most often in a set of data. |

perimeter | The distance around |

exponent | In a power, the number of times the base is used as a factor. |

variable | A symbol, usually a letter, used to represent a number. |

percent | A ratio that compares a number to 100. |

circumference | The distance around a circle. |

foot | A customary unit of length equal to 12 inches. |

median | The middle number in a set of data when the data are arranged in numerical order. |

equivalent | Having the same value...for instance, fractions that have the same number(1/2)or(2 1/2). |

mixed number | The sum of a whole number and a fraction...for instance 1 1/2, 2 1/2. |

reciprocals | Any two numbers that have a product of 1......(flip flops). |

chord | A segment with endpoints that are on a circle. |

obtuse angle | An angle that measures greater than 90 degrees, but less than 180 degrees. |

ratio | A comparison of two quantities by division... for instance, 3:4 or 3/4. |

decimals | Numbers that have digits in the tenths, hundredths, thousandths place and beyond. |

outlier | A value that is much higher or much lower than the other values in a set of data. |

improper fraction | A fraction that has a numerator that is greater than or equal to the denominator. |

ordered pair | A pair of numbers used to locate a point in the coordinate system; example, (-5, 14). |

Created by:
petermanl05