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# 7th STAAR

### vocab for 7th math

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

Absolute value - | is the distance from zero on the number line. |

Adjacent angles - | are a pair of angles immediately next to each other with one side in common. |

Base - | is the number or expression in a power that is multiplied by itself. |

Circumference - | is the distance around a circle |

Congruent - | means the same size and shape |

Constant of proportionality - | is the constant alue of the ratio of 2 proportional quantities (x & y) |

Conversion - | is an exchange from one unit of measure to another. |

Complimentary angles - | are two angles whose sum is 90°. |

Diameter - | is the distance across the circle passing through the center. |

Difference - | is the answer when you subtract |

Dialation - | is a transformation that shrinks or stretches a figure. |

Distributive property - | a(b +c) = ab +bc |

Experimental probability - | is the results when you actually toss a coin 100 times. |

Exponent - | in the power 75 the 5 is the exponent |

Expression - | uses numbers, variables, and operation symbol |

Equation - | uses numbers, variables, operation symbols, and an equal sign |

inequality - | is a comparison of two numbers or expressions using <, >. ≤, ≥ |

integers - | are natural numbers, their opposites, and “0”. |

Lateral surface area - | is the total area of the surface of a 3D object EXCLUDING the bases |

Order of Operations | PEMDAS or GEMDAS |

Power - | is an expression using a base and an exponent |

Probability – | `is the number of favorable outcomes divided by the total of all possible outcomes |

Product - | `is the answer when you multiply |

Proportion - | is an equation stating 2 ratios are equal. |

Quotient - | is the answer when you divide |

Radius - | is the distance from the center of the circle to the edge |

Rate - | is a ratio of 2 measures that have different units |

Ratio - | is a comparison of numbers or variables that can be written in fraction form. |

Rational number - | is a ratio of 2 intergers where the denominator ≠ “0”. |

Reciproccal - | are two numbers whose product is 1 |

Reflection - | is a mirror view |

Similar figures - | is the ratio of corresponding side lengths that are proportional. |

Straight angle - | is an angle that measures 180°. |

Sum - | is the answer when you add. |

Supplementary angles - | are two angles whose sum is 180°. |

Term - | is one part of an expression that includes a number, a variable, or product of both. |

Theoretical probability - | is the mathematically calculated chances of a specific event occurring. |

Total surface area - | is the total area of the surface of a 3D object. |

Translation - | is to move a figure in any direction without rotation. |

Transformation - | is the change in position or size. |

Unit rate - | is a rate that has a denominator of 1 unit |

Variable - | is a letter used to represent a number in equations or expressions. |

Vertical angles - | are pair of angles directly opposite of each other formed by the intersection of straight lines. |

Whole numbers - | are any natural number and “0”. |