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# Grades 5& 6

### PSSA Math Vocabulary Practice (Grades 5& 6)

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

Chord | A line segment whose endpoints are on a circle |

Circumference | The distance around a circle |

Composite number | A whole number having more than two factors |

Diameter | A line segment that has endpoints on a circle and passes through the center of the circle |

Expanded notation | A way to write numbers that shows the value of each digit |

Greatest common factor (GCF) | The largest factor that 2 or more numbers have in common |

Heptagon | A polygon with 7 sides |

Histogram | A bar graph in which the labels for the bars are numerical intervals |

Hypotenuse | The longest side of a right triangle (which is also the side opposite the right angle) |

Least common denominator (LCD) | The least common multiple of the denominators in two or more fractions |

Least common multiple (LCM) | The smallest number, other than zero, that is a common multiple of two or more numbers |

Leg (of a right triangle) | Either of the two sides that form the right angle in a right triangle |

Line plot | A graph showing the frequency of data on a number line |

Nonagon | A polygon with 9 sides |

Plane | A flat surface that extends infinitely in all directions |

Prime number | A whole number that has exactly two factors, 1 and itself |

Quadrants | The four regions of a coordinate plane that are separated by the axes |

Radius | A line segment that has one endpoint on a circle and the other endpoint at the center of the circle |

Range | The difference between the greatest and least numbers in a set of data |

Rate | A ratio that compares two quantities having different units |

Ratio | A comparison of two numbers using division |

Regular polygon | A polygon that has all sides congruent and all angles congruent |

Repeating decimal | A decimal that has a repeating sequence of numbers after the decimal point |

Similar polygons | Polygons that have the same shape, but not necessarily the same size,corresponding sides of similar polygons are proportional |

Straight angle | An angle with a measure of 180º |

Terminating decimal | A decimal that contains a finite number of digits |

Transformation | The moving of a figure by a translation (slide), rotation (turn) or reflection (flip) |

Unit price | The price of a single item or amount |

Unit rate | A rate with the second term being one unit |

Venn diagram | A diagram that shows relationships among sets of objects |

Whole number | Any of the numbers 0, 1, 2, 3, 4, 5, (and so on) |

X-axis | The horizontal number line on a coordinate plane |

Y-axis | The vertical number line on a coordinate plane |

Created by:
pstoughton