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# PSSA math

### vocabulary

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

a number that is being added | addend |

an angle that measures 90 degrees and forms a square corner | right angle |

an angle that measures less than 90 degrees | acute angle |

an angle that measures greater than 90 degrees | obtuse angle |

a straight path extending in both directions with no end points | line |

part of a line with two end points and a fixed length | line segment |

part of a line that has one endpoint and continues in the other direction forever | ray |

the place where two or more lines, rays, or segments cross | intersection |

lines that are always the same distance apart an will never meet | parallel lines |

two lines segments, or rays that intersect to form right angles | perpendicular lines |

figures with the same size and shape | congruent |

a triangle that has one 90 degree angle | right triangle |

a flat shape with 4 or more sides | polygon |

a polygon with 4 sides | quadrilateral |

a quadrilateral whose opposite sides are parallel and congruent | parallelogram |

a parallelogram with 4 equal sides | rhombus |

a quadrilateral with one pair of parallel sides | trapezoid |

a polygon with 5 sides | pentagon |

a polygon with 6 sides | hexagon |

a polygon with 8 sides | octagon |

a line that divides a figure into two halves that are mirror images of each other | line of symmetry |

moving a figure without turning or flipping it (also called a slide) | translation |

moving a figure to show its mirror image (also called a flip) | reflection |

moving a figure by turning it around a fixed point (also called a turn) | rotation |

moving a figure to a new position by slide (translation), flip (reflection), or turn (rotation) | transformation |

a 3 dimensional shape with length, width, and height | solid figure |

the line segment where 2 faces of a solid figure meet | edge |

a flat surface (or plane) that is one side of a solid figure | face |

a point where lines, rays, sides, or edges meet (also called a corner) | vertex |

a rectangular solid with 6 congruent square faces | cube |

a solid figure with a polygon base and triangular sides that meet at a single point | pyramid |

a solid figure with 2 circular bases that are parallel and congruent | cylinder |

a solid figure that has a circular base and one vertex | Cone |

a solid figure that has all points the same distance from the center | sphere |

any of the counting numbers | whole numbers |

a number (or any combination of numbers and symbols) that shows a mathematical relationship | expression |

having the same value | equivalent |

a math sentence showing that one expression equals another | equation |

a math sentence that contains a symbol showing that the terms on wither side are unequal | inequality |

a math equation with numbers | number sentence |

a set of addition/subtraction or multiplication/division equations that use the same numbers | fact family |

a situation in which a rule causes each "in value" to have a unique "out value" | function |

a number that divides evenly into another number | factor |

the product of a number multiplied by another number | multiple |

the number found by dividing the sum of a group of numbers by the number of addends | mean |

the number that occurs most often in a group of numbers | mode |

the middle number in a list of ordered numbers | median |

the distance around a figure | perimeter |

the measure in square units of the inside of a plane fugure | area |

the amount of space in cubic units that a solid figure can hold | volume |

a group of items in which the order doesn't matter | combination |

a rectangular arrangement of objects in equal columns or rows | array |

a table that uses tally marks to record data | tally chart |

a graph that uses pictures to show and compare information | pictograph |

a pair of numbers used to locate a point on a coordinate grid | ordered pair |

time shown on a clock or watch with hour and minute hands | analog |

Created by:
lshuey